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It provides the flexibility needed to accommodate vibration, thermal expansion, or minor misalignment. This helps ensure reliable discharge activation in commercial kitchen or industrial fire suppression systems.\u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"1008\" data-start=\"799\"\u003eIt’s pre-made and threaded to match standard system fittings (7\/16-20 swivel ends), installation and replacement are straightforward for maintenance technicians. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 data-end=\"1032\" data-start=\"1015\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-end=\"1899\" data-start=\"1034\"\u003e\n\u003cli data-end=\"1175\" data-start=\"1034\"\u003e\n\u003cp data-end=\"1175\" data-start=\"1036\"\u003e\u003cstrong data-end=\"1072\" data-start=\"1036\"\u003e16″ stainless-steel braided hose\u003c\/strong\u003e offers durability, flexibility, and resistance to corrosion. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1351\" data-start=\"1176\"\u003e\n\u003cp data-end=\"1351\" data-start=\"1178\"\u003e\u003cstrong data-end=\"1224\" data-start=\"1178\"\u003eFemale-to-female swivel fittings (7\/16-20)\u003c\/strong\u003e compatible with standard actuation ports and tees on compatible suppression systems. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003ca class=\"flex h-4.5 overflow-hidden rounded-xl px-2 text-[9px] font-medium transition-colors duration-150 ease-in-out text-token-text-secondary! bg-[#F4F4F4]! dark:bg-[#303030]!\" alt=\"https:\/\/www.suppression.com\/uploads\/pdf\/suppression-ansul-co2\/actuation-components-f-2009157.pdf?utm_source=chatgpt.com\" rel=\"noopener\" href=\"https:\/\/www.suppression.com\/uploads\/pdf\/suppression-ansul-co2\/actuation-components-f-2009157.pdf?utm_source=chatgpt.com\" target=\"_blank\"\u003e\u003cspan class=\"relative start-0 bottom-0 flex h-full w-full items-center\"\u003e\u003cspan class=\"flex h-4 w-full items-center justify-between\"\u003e\u003cspan class=\"-me-1 flex h-full items-center rounded-full px-1 text-[#8F8F8F]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1565\" data-start=\"1352\"\u003e\n\u003cp data-end=\"1565\" data-start=\"1354\"\u003e\u003cstrong data-end=\"1377\" data-start=\"1354\"\u003eFlexible connection\u003c\/strong\u003e ideal for bridging between rigid piping and actuators, accommodating system vibrations and slight misalignments during installation or discharge. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1754\" data-start=\"1566\"\u003e\n\u003cp data-end=\"1754\" data-start=\"1568\"\u003e\u003cstrong data-end=\"1604\" data-start=\"1568\"\u003eOEM-approved for certain systems\u003c\/strong\u003e suitable for use in many commercial fire suppression setups (common in systems listed by the manufacturer). \u003cspan data-state=\"closed\" class=\"\"\u003e\u003cspan data-testid=\"webpage-citation-pill\" class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1899\" data-start=\"1755\"\u003e\n\u003cp data-end=\"1899\" data-start=\"1757\"\u003e\u003cstrong data-end=\"1800\" data-start=\"1757\"\u003eReady for quick replacement or retrofit\u003c\/strong\u003e reduces downtime and simplifies maintenance or upgrades.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ansul","offers":[{"title":"Default Title","offer_id":45907741769893,"sku":"031809","price":61.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/ansul-default-title-16-inch-actuation-hose-031809-33278188912805_cdf8d0ef-e8e3-4097-9416-3050818f99e5.webp?v=1771286825"},{"product_id":"pulley-elbow-shipping-assembly-single","title":"Set Screw Pulley Elbow Shipping Assembly (Single, 415670)","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003eAnsul Set Screw Pulley Elbow | Part No. 415670 | OEM Actuation Series\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section {\n max-width: 100%;\n margin: 2rem 0;\n font-family: Arial, sans-serif;\n color: #333;\n }\n .accordion-item {\n border-bottom: 1px solid #ddd;\n }\n .accordion-header {\n display: flex;\n justify-content: space-between;\n padding: 2rem 0;\n cursor: pointer;\n background: none;\n border: none;\n width: 100%;\n text-align: left;\n color: #333;\n }\n .accordion-header:hover,\n .accordion-header:focus {\n color: #333;\n background: none;\n outline: none;\n }\n .accordion-title {\n font-size: 1.5rem;\n font-weight: 500;\n }\n .accordion-icon {\n font-size: 1.5rem;\n }\n .accordion-item.active .accordion-icon {\n transform: rotate(180deg);\n }\n .accordion-content {\n max-height: 0;\n overflow: hidden;\n }\n .accordion-item.active .accordion-content {\n max-height: none;\n }\n .accordion-content-inner {\n font-size: 1.4rem;\n line-height: 1.7;\n color: #555;\n padding-bottom: 2rem;\n }\n .accordion-content-inner p {\n margin: 0 0 1rem 0;\n }\n .accordion-content-inner ul {\n margin: 0 0 1rem 0;\n padding-left: 2rem;\n }\n .accordion-content-inner h3 {\n font-size: 1.4rem;\n font-weight: 600;\n color: #333;\n margin: 1.5rem 0 0.5rem 0;\n }\n .specs-table {\n width: 100%;\n border-collapse: collapse;\n }\n .specs-table th,\n .specs-table td {\n border: 1px solid #ddd;\n padding: 0.75rem 1rem;\n font-size: 1.4rem;\n text-align: left;\n }\n .specs-table th {\n background-color: #f5f5f5;\n font-weight: 600;\n color: #333;\n }\n\u003c\/style\u003e\n\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003c!-- Section 1: Product Overview --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Ansul Set Screw Pulley Elbow (415670) is a precision-engineered mechanical component designed to facilitate seamless 90-degree directional changes in ANSUL AUTOMAN detection and actuation cable lines. In a commercial kitchen hood, fire suppression cables must navigate a complex landscape of exhaust ducts, structural steel, and appliance headers. The 415670 provides the low-friction pivot point required to redirect these cables without inducing the parasitic drag or cable sawing that can disable a fire suppression system.\u003c\/p\u003e\n \u003cp\u003eManufactured with a durable cast body and featuring a secure set-screw mounting interface, this assembly is built for the high-vibration, high-heat environments of professional cooking lines. It is an essential zero-failure component for ensuring that the tension drop from a melted fusible link or the manual pull of a station is transmitted instantaneously to the release mechanism. For fire protection professionals, the 415670 is the industry standard for maintaining the kinetic integrity and code-compliant routing of any Ansul fire suppression network.\u003c\/p\u003e\n\n \u003ch3\u003eMitigating Kinetic Friction\u003c\/h3\u003e\n \u003cp\u003eEvery time a stainless steel cable turns a corner, it generates friction. In fire suppression, excessive friction can lead to a dead pull, where the line breaks but the cable does not move far enough to trip the control head. The 415670 utilizes a precision-machined internal pulley wheel that rolls with the cable, converting sliding friction into rolling friction and significantly reducing mechanical resistance compared to static conduit bends.\u003c\/p\u003e\n\n \u003ch3\u003eMaintaining Cable Eccentricity\u003c\/h3\u003e\n \u003cp\u003eIf a cable is forced through a standard pipe elbow, it will eventually saw through the metal. The 415670 ensures the cable stays perfectly centered within its 90-degree arc. This maintains the cable's structural integrity and prevents cable binding, ensuring the 1\/16 inch or 3\/32 inch stainless steel line can travel its full rated distance during activation.\u003c\/p\u003e\n\n \u003ch3\u003eSet-Screw Stability\u003c\/h3\u003e\n \u003cp\u003eUnlike compression-only fittings, the set-screw design of the 415670 allows the pulley to be physically locked onto the 1\/2 inch EMT conduit. This prevents the elbow from shifting under the high-tension load of an armed system, ensuring the system's cocking point remains constant over decades of service.\u003c\/p\u003e\n\n \u003ch3\u003eCompliance with NFPA 17A and 96\u003c\/h3\u003e\n \u003cp\u003eNFPA requires that all detection and actuation cables be protected and guided to ensure smooth and reliable operation. The 415670 is a UL-listed component of the Ansul R-102 system. Using standard plumbing elbows or non-listed pulleys is a code violation that can lead to red-tag failures during fire marshal inspections.\u003c\/p\u003e\n\n \u003ch3\u003eSimplified Pull-Test Verification\u003c\/h3\u003e\n \u003cp\u003eDuring mandatory semi-annual inspections, technicians must perform a trip test. The low-friction performance of the 415670 makes these tests highly predictable. A system using OEM Ansul pulleys will consistently trip at the rated tension, reducing troubleshooting time and getting the kitchen back into production faster.\u003c\/p\u003e\n\n \u003ch3\u003eResistance to Heat and Grease Fouling\u003c\/h3\u003e\n \u003cp\u003eThe 415670 features a closed-body design that shields the internal pulley wheel from aerosolized grease and carbon buildup. This ensures the internal wheel continues to spin freely, preventing the system from seizing up between service intervals.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 2: Applications \u0026 Use Cases --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eApplications \u0026amp; Use Cases\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh-Volume Restaurant Lines:\u003c\/strong\u003e Directing the detection cable from the hood plenum, around the exhaust duct, and down to the Automan release enclosure.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManual Pull Station Routing:\u003c\/strong\u003e Providing the 90-degree turn needed to route the manual actuation cable through walls to an accessible exit path.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMulti-Tank Manifolds:\u003c\/strong\u003e Coordinating cable movement across multiple agent tanks to ensure simultaneous discharge in large-scale facilities.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstitutional Cafeterias:\u003c\/strong\u003e Maintaining a robust safety infrastructure that passes rigorous public health audits.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRemote Gas Valve Actuation:\u003c\/strong\u003e Safeguarding the cable path that triggers mechanical gas shutoff valves located behind heavy equipment.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 3: Technical Specifications --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eFeature\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eManufacturer\u003c\/td\u003e\n \u003ctd\u003eAnsul\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePart Number\u003c\/td\u003e\n \u003ctd\u003e415670\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eComponent Type\u003c\/td\u003e\n \u003ctd\u003eSet Screw Pulley Elbow\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMaterial\u003c\/td\u003e\n \u003ctd\u003eHeavy-Duty Cast Alloy \/ Brass Internal Wheel\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMounting Size\u003c\/td\u003e\n \u003ctd\u003e1\/2 inch EMT Compatible\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCertification\u003c\/td\u003e\n \u003ctd\u003eUL Listed \/ ULC Listed\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eApplication\u003c\/td\u003e\n \u003ctd\u003e90-Degree Cable Directional Changes\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 4: Installation \u0026 Compliance --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eInstallation \u0026amp; Compliance\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eConduit Alignment Protocol\u003c\/h3\u003e\n \u003cp\u003eWhen attaching the 415670 to 1\/2 inch EMT, ensure the conduit is cut squarely and de-burred. A jagged conduit edge inside the pulley elbow can snag the cable, leading to activation failure.\u003c\/p\u003e\n\n \u003ch3\u003eSet-Screw Torque Verification\u003c\/h3\u003e\n \u003cp\u003eTighten the set screw until it firmly bites into the conduit. If the elbow is loose, the cable tension will eventually pull the elbow out of alignment, causing nuisance trips or failure to discharge.\u003c\/p\u003e\n\n \u003ch3\u003eVisual Inspection for Fraying\u003c\/h3\u003e\n \u003cp\u003eDuring every service, technicians should check the cable path. If you see silver dust or frayed wires, it indicates the pulley wheel has seized or the alignment is off, and the elbow must be replaced immediately to avoid a mechanical malfunction.\u003c\/p\u003e\n\n \u003ch3\u003eMaximum Bend Limits\u003c\/h3\u003e\n \u003cp\u003eWhile efficient, NFPA 96 often limits the number of 90-degree bends allowed in a single detection line. Always refer to the system's as-built drawings to ensure you have not exceeded the maximum allowable mechanical resistance.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 5: FAQ --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eCan I use this pulley for a manual pull station line?\u003c\/h3\u003e\n \u003cp\u003eYes. The 415670 is rated for both detection lines (fusible links) and manual actuation lines. Its robust construction can easily handle the high-force pull required to trigger the system manually.\u003c\/p\u003e\n\n \u003ch3\u003eDoes this pulley need to be lubricated?\u003c\/h3\u003e\n \u003cp\u003eNo. The internal wheel is designed for dry-operation. Adding grease or oil can attract kitchen dust, eventually creating a thick paste that will cause the wheel to seize. If the wheel does not spin freely, it is a failed safety component and must be replaced.\u003c\/p\u003e\n\n \u003ch3\u003eWhat is the difference between a \"set screw\" and a \"compression\" elbow?\u003c\/h3\u003e\n \u003cp\u003eThe set screw version (415670) provides a mechanical lock that prevents the elbow from spinning on the conduit. This is generally preferred for high-tension lines where line-twist can become an issue during the system cocking process.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n const headers = document.querySelectorAll('.accordion-header');\n headers.forEach(header =\u003e {\n header.addEventListener('click', function() {\n this.parentElement.classList.toggle('active');\n });\n });\n});\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Ansul Set Screw Pulley Elbow\",\n \"description\": \"UL Listed OEM set screw pulley elbow for 90-degree cable directional changes in Ansul R-102 detection and actuation lines. Heavy-duty cast alloy body with brass internal wheel. Mounts to 1\/2 inch EMT conduit. Converts sliding friction to rolling friction for zero-hesitation system response.\",\n \"sku\": \"415670\",\n \"mpn\": \"415670\",\n \"brand\": {\n \"@type\": \"Brand\",\n \"name\": \"Ansul\"\n },\n \"manufacturer\": {\n \"@type\": \"Organization\",\n \"name\": \"Ansul (A Johnson Controls Brand)\"\n },\n \"category\": \"Fire Suppression Equipment\",\n \"additionalProperty\": [\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Part Number\",\n \"value\": \"415670\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Component Type\",\n \"value\": \"Set Screw Pulley Elbow\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Material\",\n \"value\": \"Heavy-Duty Cast Alloy \/ Brass Internal Wheel\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Mounting Size\",\n \"value\": \"1\/2 inch EMT Compatible\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Certification\",\n \"value\": \"UL Listed \/ ULC Listed\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Application\",\n \"value\": \"90-Degree Cable Directional Changes\"\n }\n ]\n}\n\u003c\/script\u003e\n\n\n\u003c\/body\u003e","brand":"Ansul","offers":[{"title":"Default Title","offer_id":45907743113381,"sku":"415670","price":15.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/ansul-default-title-set-screw-pulley-elbow-shipping-assembly-single-415670-33278190616741_30b6170e-ec9b-447f-8d29-5c09464fe16e.webp?v=1771286823"},{"product_id":"pulley-elbow-shipping-assembly-pack-of-50","title":"Pulley Elbow Shipping Assembly (Pack of 50, 415671)","description":"\u003cp\u003eAlternate bulk pack of 50 elbow pulleys, compatible with Ansul cable systems. Used for routing and tensioning actuation cable.\u003c\/p\u003e","brand":"Ansul","offers":[{"title":"Default Title","offer_id":45907743539365,"sku":"415671","price":727.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/ansul-default-title-pulley-elbow-shipping-assembly-pack-of-50-415671-33278191042725_de21511e-f22e-4165-8239-484a3b5f3cdd.webp?v=1771286822"},{"product_id":"pulley-elbow-shipping-assembly-pack-of-50-423250","title":"Pulley Elbow Shipping Assembly (Pack of 50, 423251)","description":"\u003cp\u003eBulk pack of 50 elbow pulleys for Ansul cable systems, used in large installations or service inventory.\u003c\/p\u003e","brand":"Ansul","offers":[{"title":"Default Title","offer_id":45907745734821,"sku":"423251","price":907.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/ansul-default-title-pulley-elbow-shipping-assembly-pack-of-50-423251-33278197760165_59a61e7b-81d1-4c89-b438-7c32e2f97ca8.webp?v=1771286819"},{"product_id":"pulley-elbow-shipping-assembly-single-423250","title":"Compression Pulley Elbow Shipping Assembly, Single Item - 423250","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003eAnsul Compression Pulley Elbow | Part No. 423250 | 1\/2\" EMT Series\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section {\n max-width: 100%;\n margin: 2rem 0;\n font-family: Arial, sans-serif;\n color: #333;\n }\n .accordion-item {\n border-bottom: 1px solid #ddd;\n }\n .accordion-header {\n display: flex;\n justify-content: space-between;\n padding: 2rem 0;\n cursor: pointer;\n background: none;\n border: none;\n width: 100%;\n text-align: left;\n color: #333;\n }\n .accordion-header:hover,\n .accordion-header:focus {\n color: #333;\n background: none;\n outline: none;\n }\n .accordion-title {\n font-size: 1.5rem;\n font-weight: 500;\n }\n .accordion-icon {\n font-size: 1.5rem;\n }\n .accordion-item.active .accordion-icon {\n transform: rotate(180deg);\n }\n .accordion-content {\n max-height: 0;\n overflow: hidden;\n }\n .accordion-item.active .accordion-content {\n max-height: none;\n }\n .accordion-content-inner {\n font-size: 1.4rem;\n line-height: 1.7;\n color: #555;\n padding-bottom: 2rem;\n }\n .accordion-content-inner p {\n margin: 0 0 1rem 0;\n }\n .accordion-content-inner ul {\n margin: 0 0 1rem 0;\n padding-left: 2rem;\n }\n .accordion-content-inner h3 {\n font-size: 1.4rem;\n font-weight: 600;\n color: #333;\n margin: 1.5rem 0 0.5rem 0;\n }\n .specs-table {\n width: 100%;\n border-collapse: collapse;\n }\n .specs-table th,\n .specs-table td {\n border: 1px solid #ddd;\n padding: 0.75rem 1rem;\n font-size: 1.4rem;\n text-align: left;\n }\n .specs-table th {\n background-color: #f5f5f5;\n font-weight: 600;\n color: #333;\n }\n\u003c\/style\u003e\n\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003c!-- Section 1: Product Overview --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Ansul 423250 Compression Pulley Elbow is a mission-critical, high-performance routing component engineered specifically for the mechanical detection and actuation lines of Ansul R-102 and PIRANHA fire suppression systems. In the sophisticated architecture of a fire safety network, the detection line is the sensory system. Its success depends on the fluid, unhindered movement of the 1\/16\" stainless steel cable. The 423250 serves as the primary 90-degree routing junction, replacing traditional high-friction conduit bends with a precision-machined, rolling-pulley interface.\u003c\/p\u003e\n \u003cp\u003eDesigned for the high-velocity, grease-heavy environment of a commercial kitchen, the 423250 is more than a conduit fitting; it is a friction neutralizer. By providing a low-resistance path for the mechanical signal, it ensures that the kinetic energy from a melting fusible link or a manual pull station is transmitted instantly to the AUTOMAN release mechanism. For fire protection contractors, the 423250 is the definitive choice for cable drag mitigation in complex, multi-corner layouts where resistance would otherwise lead to a failure to discharge.\u003c\/p\u003e\n\n \u003ch3\u003eMitigation of Kinetic Friction\u003c\/h3\u003e\n \u003cp\u003eStandard conduit bends create significant sliding friction as the cable rubs against the interior wall of the EMT. The 423250 utilizes a bearing-supported internal roller that converts this into rolling friction, drastically reducing the force required to actuate the system.\u003c\/p\u003e\n\n \u003ch3\u003eLine-of-Sight Tension Conservation\u003c\/h3\u003e\n \u003cp\u003eEvery 90-degree turn is a potential force drain. The 423250 is engineered to maintain line-of-sight tension. By ensuring the cable remains centered within the 1\/2\" EMT conduit, it prevents the cable from biting into metal edges, which prevents fraying and eventual snapping.\u003c\/p\u003e\n\n \u003ch3\u003eAdhesive Effect Defense\u003c\/h3\u003e\n \u003cp\u003eCommercial kitchens are aerosolized grease environments. Over time, grease can penetrate conduit runs and solidify. The 423250 features a fully enclosed housing that shields the internal roller from this accumulation, preventing solidified grease from seizing the pulley.\u003c\/p\u003e\n\n \u003ch3\u003eThreadless Compression Logistics\u003c\/h3\u003e\n \u003cp\u003eTraditional threaded pulleys require time-consuming pipe threading. The 423250 utilizes a threadless compression connection, allowing it to snap directly onto standard 1\/2\" EMT. This reduces labor hours during installation and allows for rapid field adjustments.\u003c\/p\u003e\n\n \u003ch3\u003eCompliance with the 20-Pulley Limit\u003c\/h3\u003e\n \u003cp\u003eNFPA 17A and the Ansul Technical Manual set a strict 20-pulley limit per single cable run. Because the 423250 is the factory-listed component for this calculation, using it ensures that the system remains within its UL-tested performance envelope.\u003c\/p\u003e\n\n \u003ch3\u003eZinc Alloy Metallurgy\u003c\/h3\u003e\n \u003cp\u003eSituated directly above high-heat appliances, routing hardware is subject to thermal cycling. The 423250 is manufactured with zinc alloy metallurgy that resists pitting corrosion, ensuring the roller remains free-spinning for the entire service life of the system.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 2: Applications \u0026 Use Cases --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eApplications \u0026amp; Use Cases\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMulti-Appliance V-Bank Hoods:\u003c\/strong\u003e Routing detection lines across long appliance batteries where multiple 90-degree turns are required.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRemote Manual Pull Stations:\u003c\/strong\u003e Ensuring the mechanical pull reaches the AUTOMAN release without being absorbed by cable drag.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eIndustrial Paint Booths:\u003c\/strong\u003e Integrated into the Ansul I-101 system to route detection cables around complex machinery.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMobile Kitchen Units:\u003c\/strong\u003e Providing a vibration-resistant routing solution that ensures the cable remains centered despite vehicle motion.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRetrofit Modernization:\u003c\/strong\u003e Replacing aged, high-friction conduit bends during 12-year overhauls to restore factory-rated actuation speed.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 3: Technical Specifications --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eFeature\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eManufacturer\u003c\/td\u003e\n \u003ctd\u003eAnsul\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePart Number\u003c\/td\u003e\n \u003ctd\u003e423250\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eConduit Compatibility\u003c\/td\u003e\n \u003ctd\u003e1\/2\" EMT Series\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eConnection Style\u003c\/td\u003e\n \u003ctd\u003eThreadless Compression\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eInternal Mechanism\u003c\/td\u003e\n \u003ctd\u003eBearing-Supported Internal Roller\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMax Capacity\u003c\/td\u003e\n \u003ctd\u003e20-Pulley Limit (Per NFPA 17A)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMaterial\u003c\/td\u003e\n \u003ctd\u003eZinc Alloy Metallurgy (Corrosion Resistant)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompliance\u003c\/td\u003e\n \u003ctd\u003eUL Listed, ULC Listed, FM Approved\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 4: Installation \u0026 Compliance --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eInstallation \u0026amp; Compliance\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eThe Bottom-Out Seating Rule\u003c\/h3\u003e\n \u003cp\u003eWhen installing the 423250, the conduit must be pushed until it bottoms out against the internal shoulder. If partially inserted, the cable can catch on the raw edge of the pipe, potentially jamming the system.\u003c\/p\u003e\n\n \u003ch3\u003eCable-Pull Fluidity Audit\u003c\/h3\u003e\n \u003cp\u003eDuring every 6-month inspection, perform a tension-sweep. While the system is locked out, the cable should be moved manually to verify every 423250 is spinning freely. A gritty feeling indicates grease-caking defense failure, requiring immediate replacement.\u003c\/p\u003e\n\n \u003ch3\u003eCompression Nut Torque\u003c\/h3\u003e\n \u003cp\u003eNuts must be tightened to the point of immobility. A loose pulley can rotate under the tension of an actuation line discharge, causing the cable to misalign and bind.\u003c\/p\u003e\n\n \u003ch3\u003eStructural Member Mounting\u003c\/h3\u003e\n \u003cp\u003eEnsure the conduit run is secured to a structural member to prevent the entire run from shifting, which would alter the calibrated tension of the detection loop.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 5: FAQ --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eCan I use the 423250 with 1\/8\" cable?\u003c\/h3\u003e\n \u003cp\u003eNo. The 423250 is specifically engineered for 1\/16\" stainless steel cable. Using a thicker cable can cause binding within the pulley housing, preventing the system from firing.\u003c\/p\u003e\n\n \u003ch3\u003eIs there a difference between the 423250 and a standard conduit elbow?\u003c\/h3\u003e\n \u003cp\u003eYes. A standard conduit elbow is a hollow pipe; the cable rubs against the interior wall, creating high friction. The 423250 contains an internal rolling wheel. You cannot pass a fire inspection using standard conduit elbows for detection or actuation lines.\u003c\/p\u003e\n\n \u003ch3\u003eDoes this pulley require lubrication?\u003c\/h3\u003e\n \u003cp\u003eNo. The internal roller is designed to be maintenance-free. Adding oil or grease can be counterproductive, as it will attract and trap airborne kitchen grease, eventually leading to a seized pulley.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n const headers = document.querySelectorAll('.accordion-header');\n headers.forEach(header =\u003e {\n header.addEventListener('click', function() {\n this.parentElement.classList.toggle('active');\n });\n });\n});\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Ansul Compression Pulley Elbow\",\n \"description\": \"UL Listed threadless compression pulley elbow for 1\/2 inch EMT detection and actuation lines in Ansul R-102 and PIRANHA fire suppression systems. Bearing-supported internal roller converts sliding friction to rolling friction for zero-hesitation 90-degree cable routing. Zinc alloy corrosion-resistant construction. Rated within 20-pulley NFPA 17A limit. FM Approved.\",\n \"sku\": \"423250\",\n \"mpn\": \"423250\",\n \"brand\": {\n \"@type\": \"Brand\",\n \"name\": \"Ansul\"\n },\n \"manufacturer\": {\n \"@type\": \"Organization\",\n \"name\": \"Ansul (A Johnson Controls Brand)\"\n },\n \"category\": \"Fire Suppression Equipment\",\n \"additionalProperty\": [\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Part Number\",\n \"value\": \"423250\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Conduit Compatibility\",\n \"value\": \"1\/2 inch EMT Series\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Connection Style\",\n \"value\": \"Threadless Compression\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Internal Mechanism\",\n \"value\": \"Bearing-Supported Internal Roller\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Max Capacity\",\n \"value\": \"20-Pulley Limit (Per NFPA 17A)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Material\",\n \"value\": \"Zinc Alloy Metallurgy (Corrosion Resistant)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Compliance\",\n \"value\": \"UL Listed, ULC Listed, FM Approved\"\n }\n ]\n}\n\u003c\/script\u003e\n\n\n\u003c\/body\u003e","brand":"Ansul","offers":[{"title":"Default Title","offer_id":45907746291877,"sku":"423250","price":10.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/ansul-default-title-compression-pulley-elbow-shipping-assembly-single-423250-33278198481061_1f8332a7-a2e8-4d92-afea-a036e6c4b9a4.webp?v=1771286818"},{"product_id":"r-102-manual-reset-relay","title":"Manual Reset Relay 426151","description":"\u003cdiv class=\"ansul-product-section\"\u003e\n \u003cstyle\u003e\n .ansul-product-section {\n max-width: 100%;\n margin: 2rem 0;\n font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;\n color: #333;\n }\n \n .accordion-item {\n border-bottom: 1px solid #e5e5e5;\n }\n \n .accordion-item:first-child {\n border-top: 1px solid #e5e5e5;\n }\n \n .accordion-header {\n display: flex;\n justify-content: space-between;\n align-items: center;\n padding: 2.25rem 0;\n cursor: pointer;\n background: none;\n border: none;\n width: 100%;\n text-align: left;\n }\n \n .accordion-header:hover {\n opacity: 0.8;\n }\n \n .accordion-title {\n font-size: 1.5rem;\n font-weight: 500;\n color: #1a1a1a;\n letter-spacing: 0.02em;\n margin: 0;\n }\n \n .accordion-icon {\n font-size: 1.875rem;\n font-weight: 300;\n color: #666;\n transition: transform 0.3s ease;\n line-height: 1;\n }\n \n .accordion-item.active .accordion-icon {\n transform: rotate(180deg);\n }\n \n .accordion-content {\n max-height: 0;\n overflow: hidden;\n transition: max-height 0.3s ease, padding 0.3s ease;\n padding: 0;\n }\n \n .accordion-item.active .accordion-content {\n max-height: 5000px;\n padding-bottom: 1.5rem;\n }\n \n .accordion-content-inner {\n font-size: 1.40625rem;\n line-height: 1.7;\n color: #555;\n }\n \n .accordion-content-inner p {\n margin: 0 0 1.5rem 0;\n }\n \n .accordion-content-inner p:last-child {\n margin-bottom: 0;\n }\n \n .accordion-content-inner h3 {\n font-size: 1.40625rem;\n font-weight: 600;\n color: #333;\n margin: 1.875rem 0 1.125rem 0;\n }\n \n .accordion-content-inner ul {\n margin: 1.125rem 0 1.5rem 0;\n padding-left: 2.25rem;\n }\n \n .accordion-content-inner li {\n margin-bottom: 0.75rem;\n line-height: 1.6;\n font-size: 1.40625rem;\n }\n \n .accordion-content-inner ol {\n margin: 1.125rem 0 1.5rem 0;\n padding-left: 2.25rem;\n }\n \n .accordion-content-inner ol li {\n margin-bottom: 0.75rem;\n line-height: 1.6;\n font-size: 1.40625rem;\n }\n \n .specs-table {\n width: 100%;\n border-collapse: collapse;\n margin: 1.5rem 0 0 0;\n }\n \n .specs-table tr {\n border-bottom: 1px solid #e5e5e5;\n }\n \n .specs-table tr:last-child {\n border-bottom: none;\n }\n \n .specs-table td {\n padding: 1.3125rem 0;\n font-size: 1.40625rem;\n vertical-align: top;\n }\n \n .specs-table td:first-child {\n font-weight: 600;\n color: #333;\n width: 40%;\n padding-right: 2.25rem;\n }\n \n .specs-table td:last-child {\n color: #555;\n }\n\n \/* Responsive *\/\n @media (max-width: 768px) {\n .accordion-header {\n padding: 1.875rem 0;\n }\n\n .accordion-title {\n font-size: 1.25rem;\n }\n\n .specs-table td:first-child {\n width: 45%;\n padding-right: 1.5rem;\n }\n\n .specs-table td {\n padding: 1.125rem 0;\n font-size: 1.25rem;\n }\n\n .accordion-content-inner {\n font-size: 1.25rem;\n }\n\n .accordion-content-inner li {\n font-size: 1.25rem;\n }\n }\n \u003c\/style\u003e\n\n \u003cdiv class=\"accordion\"\u003e\n \u003c!-- Product Overview --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\" aria-expanded=\"false\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eProduct Overview\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Ansul R-102 Manual Reset Relay is a sophisticated electrical safety component used in conjunction with the Ansul R-102 Restaurant Fire Suppression System. While a standard switch simply turns power on or off, the Manual Reset Relay adds a critical layer of \"Latching\" logic to your kitchen's emergency response.\u003c\/p\u003e\n \n \u003cp\u003eIts primary purpose is to control electric gas valves and other electrical appliances. In the event of a fire, the suppression system triggers the relay to cut power instantly. However, unlike a standard light switch, this relay \"remembers\" the alarm state. Even after the fire is out and the suppression system is reset, the relay will not allow power to return to the cooking line until a human being manually pushes the reset button. This prevents gas from flowing back into a potentially damaged or unlit appliance, averting a secondary explosion or gas leak.\u003c\/p\u003e\n\n \u003ch3\u003eWhy This Component is Essential for Compliance\u003c\/h3\u003e\n \u003cp\u003eIn many jurisdictions, local fire codes and NFPA 17A regulations mandate that fuel sources cannot automatically restart after a fire suppression discharge. The Ansul 426151 is the approved solution to meet this requirement.\u003c\/p\u003e\n\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eFail-Safe Operation:\u003c\/strong\u003e Designed to remain in the \"Tripped\" position during a power outage or system actuation.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eIntentional Restart:\u003c\/strong\u003e By requiring a manual physical reset, it forces the kitchen manager or fire technician to verify that all pilot lights are out and the cooking area is safe before re-energizing the equipment.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh-Load Compatibility:\u003c\/strong\u003e Operates on standard 120V \/ 60 Hz power, making it compatible with most commercial electrical panels and solenoid-style electric gas valves.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eKey Technical Differentiators\u003c\/h3\u003e\n \u003cp\u003eIt is important to distinguish the Manual Reset Relay from the Micro Switch:\u003c\/p\u003e\n\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMicro Switch (Mechanical):\u003c\/strong\u003e Activated physically by the movement of the Ansul Automan's firing pin.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManual Reset Relay (Electrical):\u003c\/strong\u003e Activated by an electrical pulse from the system. It \"latches\" the power off, whereas a micro switch would simply flip back once the mechanical tension is restored.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eModel 426151:\u003c\/strong\u003e This is the current, high-reliability replacement for the older Ansul 14702 model.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Applications \u0026 Use Cases --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\" aria-expanded=\"false\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eApplications \u0026amp; Use Cases\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Ansul Manual Reset Relay is typically found in professional kitchens that utilize Electric Gas Valves or Shunt-Trip Breakers:\u003c\/p\u003e\n\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eSolenoid Gas Valves:\u003c\/strong\u003e It acts as the \"Gatekeeper\" for the solenoid, ensuring the valve stays closed after a discharge.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eElectrical Appliance Interlock:\u003c\/strong\u003e Prevents deep fryers and griddles from heating up immediately after a system reset, protecting the heating elements from being damaged before the kitchen is fully cleaned.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRemote Alarm Integration:\u003c\/strong\u003e Can be used to maintain a \"Trouble\" signal to a building's main fire alarm panel until the site is cleared by a professional.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eMaintenance and Professional Service\u003c\/h3\u003e\n \u003cp\u003eAs a life-safety electrical component, the Ansul 426151 requires semi-annual testing by a certified technician:\u003c\/p\u003e\n\n \u003col\u003e\n \u003cli\u003e\n\u003cstrong\u003eTrip Test:\u003c\/strong\u003e During the 6-month inspection, the technician will electrically trip the relay to ensure it successfully disconnects power to the gas valve.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReset Confirmation:\u003c\/strong\u003e Verification that the relay stays \"locked\" in the off position and only restores power when the manual button is firmly depressed.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTerminal Check:\u003c\/strong\u003e Ensuring all wiring connections remain tight and free of the oxidation often caused by high-humidity kitchen environments.\u003c\/li\u003e\n \u003c\/ol\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Technical Specifications --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\" aria-expanded=\"false\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eTechnical Specifications\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eManufacturer\u003c\/td\u003e\n \u003ctd\u003eAnsul (A Johnson Controls Brand)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePart Number\u003c\/td\u003e\n \u003ctd\u003e426151 (Replaces 14702)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVoltage\u003c\/td\u003e\n \u003ctd\u003e120V AC \/ 60 Hz\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eReset Type\u003c\/td\u003e\n \u003ctd\u003eManual Push-Button\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHousing\u003c\/td\u003e\n \u003ctd\u003eDurable, high-heat resistant enclosure\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompliance\u003c\/td\u003e\n \u003ctd\u003eUL Listed, CSA Approved, NFPA 17A \u0026amp; 96\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eWeight\u003c\/td\u003e\n \u003ctd\u003e~1.89 lbs\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Compliance \u0026 Safety --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\" aria-expanded=\"false\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eCompliance \u0026amp; Safety\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Ansul 426151 Manual Reset Relay meets critical regulatory requirements for commercial kitchen fire protection:\u003c\/p\u003e\n\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eUL Listed:\u003c\/strong\u003e Tested and certified by Underwriters Laboratories for reliable performance in fire safety applications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCSA Approved:\u003c\/strong\u003e Meets Canadian Standards Association requirements for electrical safety components.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eNFPA 17A \u0026amp; NFPA 96:\u003c\/strong\u003e Complies with National Fire Protection Association standards requiring manual verification before fuel sources can be re-energized after a fire suppression event.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLatching Memory Function:\u003c\/strong\u003e Ensures compliance with local fire codes that prohibit automatic restart of fuel sources after system discharge.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cscript\u003e\n document.addEventListener('DOMContentLoaded', function() {\n const accordionHeaders = document.querySelectorAll('.accordion-header');\n \n accordionHeaders.forEach(header =\u003e {\n header.addEventListener('click', function() {\n const accordionItem = this.parentElement;\n const isActive = accordionItem.classList.contains('active');\n \n \/\/ Toggle current item\n accordionItem.classList.toggle('active');\n this.setAttribute('aria-expanded', !isActive);\n });\n });\n });\n \u003c\/script\u003e\n\n \u003c!-- JSON-LD Product Schema (hidden from customers) --\u003e\n \u003cscript type=\"application\/ld+json\"\u003e\n {\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Ansul R-102 Manual Reset Relay (120V)\",\n \"description\": \"Electrical safety component with latching logic for Ansul R-102 Restaurant Fire Suppression System - prevents automatic restart of fuel sources after fire suppression discharge\",\n \"sku\": \"426151\",\n \"mpn\": \"426151\",\n \"brand\": {\n \"@type\": \"Brand\",\n \"name\": \"Ansul\"\n },\n \"manufacturer\": {\n \"@type\": \"Organization\",\n \"name\": \"Ansul (A Johnson Controls Brand)\"\n },\n \"additionalProperty\": [\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Voltage\",\n \"value\": \"120V AC \/ 60 Hz\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Reset Type\",\n \"value\": \"Manual Push-Button\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Replaces Model\",\n \"value\": \"14702\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Weight\",\n \"value\": \"1.89 lbs\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"System Compatibility\",\n \"value\": \"Ansul R-102 Restaurant Fire Suppression System\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Certifications\",\n \"value\": \"UL Listed, CSA Approved, NFPA 17A, NFPA 96\"\n }\n ],\n \"category\": \"Fire Suppression Equipment\"\n }\n \u003c\/script\u003e\n\u003c\/div\u003e","brand":"Ansul","offers":[{"title":"Default Title","offer_id":45907746521253,"sku":"426151","price":271.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/ansul-default-title-manual-reset-relay-426151-33278199988389_cc018cdb-73f4-4092-a372-68668b156bbf.webp?v=1771286818"},{"product_id":"427929-pulley-tee-single","title":"Pulley Tee, Single Item - 427929","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003eAnsul Pulley Tee | R-102 Cable Routing | Part No. 427929\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section { max-width: 100%; margin: 2rem 0; font-family: Arial, sans-serif; color: #333; }\n .accordion-item { border-bottom: 1px solid #ddd; }\n .accordion-header { display: flex; justify-content: space-between; padding: 2rem 0; cursor: pointer; background: none; border: none; width: 100%; text-align: left; color: #333; }\n .accordion-header:hover, .accordion-header:focus { color: #333; background: none; outline: none; }\n .accordion-title { font-size: 1.5rem; font-weight: 500; }\n .accordion-icon { font-size: 1.5rem; }\n .accordion-item.active .accordion-icon { transform: rotate(180deg); }\n .accordion-content { max-height: 0; overflow: hidden; }\n .accordion-item.active .accordion-content { max-height: none; }\n .accordion-content-inner { font-size: 1.4rem; line-height: 1.7; color: #555; padding-bottom: 2rem; }\n .accordion-content-inner p { margin: 0 0 1rem 0; }\n .accordion-content-inner ul { margin: 0 0 1rem 0; padding-left: 2rem; }\n .accordion-content-inner h3 { font-size: 1.4rem; font-weight: 600; color: #333; margin: 1.5rem 0 0.5rem 0; }\n .specs-table { width: 100%; border-collapse: collapse; }\n .specs-table th, .specs-table td { border: 1px solid #ddd; padding: 0.75rem 1rem; font-size: 1.4rem; text-align: left; }\n .specs-table th { background-color: #f5f5f5; font-weight: 600; color: #333; }\n\u003c\/style\u003e\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Ansul 427929 Pulley Tee is a single tee-shaped cable routing pulley used in ANSUL R-102 suppression system mechanical detection and actuation cable networks. In plain terms: the R-102 system uses a network of stainless steel cables running from the thermal detection links above the cooking equipment, through a series of pulleys, to the Automan control head. When a fusible link melts from heat, the cable tension releases and the Automan fires the system. The pulley tee is used at points in that cable network where the cable needs to split in two directions — letting you run one cable toward the Automan and another toward an additional detection zone or component.\u003c\/p\u003e\n \u003cp\u003eThe 427929 guides the actuation cable through the direction change with minimal friction — critical because too much friction anywhere in the cable run can prevent the cable tension from fully releasing when a link melts, potentially slowing or preventing system activation. This is why using the OEM ANSUL pulley tee matters: the precise groove geometry and smooth bearing surface of the 427929 are engineered for the specific cable diameter and tension specifications of the ANSUL R-102 detection network. A generic pulley with incorrect groove geometry can bind or fray the cable over time.\u003c\/p\u003e\n \u003cp\u003eAvailable through authorized ANSUL distributors. The 427929 is installed during the original system installation and should be inspected at every semi-annual NFPA 17A and NFPA 96 service visit — check the cable alignment in the pulley groove, verify the pulley rotates freely, and look for any cable fraying at the contact point. A sticky or corroded pulley that resists rotation should be replaced. Document pulley condition in the fire suppression system inspection record.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eANSUL\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e427929\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eTee pulley — cable splits in two directions\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCompatible Systems\u003c\/td\u003e\n\u003ctd\u003eANSUL R-102 cable detection and actuation networks\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eRoutes actuation cable through a tee direction change with minimal friction\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL Listed, OEM Original\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eMaintenance \u0026amp; Compliance (NFPA 17A)\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eAt every semi-annual NFPA 17A and NFPA 96 inspection, the technician will check each pulley tee in the cable run. The cable must sit correctly in the pulley groove, the pulley must rotate freely without binding, and there must be no cable fraying at the contact point. Grease buildup in the kitchen environment can work its way into pulley mechanisms over time — even a small amount of friction added by a sticky pulley can affect cable tension calibration across the entire detection network. Replace any 427929 that shows corrosion, binding, or cable damage. Document condition in the fire suppression system inspection record.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eWhat is the difference between the pulley tee and the pulley elbow?\u003c\/h3\u003e\n \u003cp\u003eA pulley elbow changes the cable direction at a corner — like turning 90 degrees. A pulley tee splits the cable run into two directions from one point — like a \"T\" junction. In an ANSUL R-102 detection network, you'd use elbows for turns and tees where one cable run splits to cover two separate detection zones or components. Your ANSUL R-102 system design drawings show the exact locations and types of pulleys required for your specific installation.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n document.querySelectorAll('.accordion-header').forEach(h =\u003e h.addEventListener('click', function() { this.parentElement.classList.toggle('active'); }));\n});\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Ansul Pulley Tee | R-102 Cable Routing | Part No. 427929\",\n \"description\": \"OEM ANSUL 427929 pulley tee for R-102 mechanical detection and actuation cable networks. Routes cable through a tee junction with minimal friction. Inspect semi-annually per NFPA 17A — replace if binding or corroded.\",\n \"sku\": \"427929\", \"mpn\": \"427929\",\n \"brand\": { \"@type\": \"Brand\", \"name\": \"ANSUL\" },\n \"category\": \"Fire Suppression Equipment\"\n}\n\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Ansul","offers":[{"title":"Default Title","offer_id":45907797344421,"sku":"427929","price":85.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/ansul-default-title-427929-pulley-tee-single-33278378868901_774bed14-4eb8-45d6-ab04-d6590b8a90da.webp?v=1771286816"},{"product_id":"435547-detector-series-scissor-linkage-25-pack","title":"435548 Detector, Series (Scissor Linkage) (25 Pack)","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003eAnsul Detector Series Scissor Linkage (25 Pack) | Part No. 435548\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section { max-width: 100%; margin: 2rem 0; font-family: Arial, sans-serif; color: #333; }\n .accordion-item { border-bottom: 1px solid #ddd; }\n .accordion-header { display: flex; justify-content: space-between; padding: 2rem 0; cursor: pointer; background: none; border: none; width: 100%; text-align: left; color: #333; }\n .accordion-header:hover, .accordion-header:focus { color: #333; background: none; outline: none; }\n .accordion-title { font-size: 1.5rem; font-weight: 500; }\n .accordion-icon { font-size: 1.5rem; }\n .accordion-item.active .accordion-icon { transform: rotate(180deg); }\n .accordion-content { max-height: 0; overflow: hidden; }\n .accordion-item.active .accordion-content { max-height: none; }\n .accordion-content-inner { font-size: 1.4rem; line-height: 1.7; color: #555; padding-bottom: 2rem; }\n .accordion-content-inner p { margin: 0 0 1rem 0; }\n .accordion-content-inner ul { margin: 0 0 1rem 0; padding-left: 2rem; }\n .accordion-content-inner h3 { font-size: 1.4rem; font-weight: 600; color: #333; margin: 1.5rem 0 0.5rem 0; }\n .specs-table { width: 100%; border-collapse: collapse; }\n .specs-table th, .specs-table td { border: 1px solid #ddd; padding: 0.75rem 1rem; font-size: 1.4rem; text-align: left; }\n .specs-table th { background-color: #f5f5f5; font-weight: 600; color: #333; }\n\u003c\/style\u003e\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Ansul 435548 is a 25-pack of Series heat detectors with scissor-style linkage, used in ANSUL suppression systems to trigger mechanical release when fusible links melt. In plain terms: this is the heat detection component that \"pulls the trigger\" on the suppression system when a fire gets hot enough above the cooking equipment. The scissor linkage holds the detection cable under tension when the fusible link in the center of the scissor assembly melts from the heat of a fire, the scissor collapses, releasing the cable tension and allowing the Automan control head to initiate system discharge.\u003c\/p\u003e\n \u003cp\u003eThe scissor linkage design holds two fusible link elements in a compact bracket that mounts above the protected appliance. When either fusible link melts, the scissor mechanism opens and releases the actuation cable. This design provides a clean, reliable mechanical release with minimal friction important because any binding in the detection linkage can delay system activation. The 25-pack quantity provides sufficient detectors for multiple ANSUL R-102 system installations or for restocking a service vehicle that performs semi-annual inspection replacements across multiple accounts.\u003c\/p\u003e\n \u003cp\u003ePer NFPA 17A and NFPA 96, fusible link detectors must be replaced at every semi-annual inspection they are not reusable and must never be reinstalled after removal. The 435548 25-pack makes this mandatory replacement cost-effective for high-volume service operations. Available through authorized ANSUL distributors. After replacing all detectors, re-tension the detection cable per the ANSUL R-102 system documentation before returning the system to armed service.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eANSUL\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e435548\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e25 per pack\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eHeat detector with scissor linkage\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCompatible Systems\u003c\/td\u003e\n\u003ctd\u003eANSUL suppression systems\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eService Requirement\u003c\/td\u003e\n\u003ctd\u003eReplace at every semi-annual inspection — single use only\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL Listed, OEM Original\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eMaintenance \u0026amp; Compliance (NFPA 17A \u0026amp; 96)\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eReplace all 435548 detectors at every semi-annual NFPA 17A and NFPA 96 inspection. This is mandatory regardless of condition. Even if the fusible links haven't melted, repeated exposure to the heat cycles of a commercial kitchen can degrade the link's rated melt temperature over time, causing it to trigger at a lower temperature than designed or to become desensitized and fail to trigger at the correct temperature. Fresh detectors at every semi-annual inspection ensure the detection temperature rating is always within specification. Re-tension the detection cable after installation and document all detector replacements in the fire suppression system inspection record.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eWhat temperature rating are these detectors?\u003c\/h3\u003e\n \u003cp\u003eVerify the specific temperature rating of the 435548 Series detector using the ANSUL parts documentation or by consulting authorized ANSUL distributors. ANSUL detector temperature ratings are selected based on the normal operating temperature above each type of cooking appliance. Detectors over high-heat fryers use a higher temperature rating than detectors over lower-heat appliances. Always confirm the correct temperature rating for your specific appliance and detector position before installation.\u003c\/p\u003e\n \u003ch3\u003eCan I reuse detectors that haven't melted?\u003c\/h3\u003e\n \u003cp\u003eNo. NFPA 17A and NFPA 96 require replacement at every semi-annual inspection regardless of condition. The 25-pack format makes this replacement economical. Never reuse removed detectors even if they look undamaged, the internal fusible link elements may have been affected by heat cycling and the mechanical linkage may have taken a set that affects its release characteristics.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n document.querySelectorAll('.accordion-header').forEach(h =\u003e h.addEventListener('click', function() { this.parentElement.classList.toggle('active'); }));\n});\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Ansul Detector Series Scissor Linkage (25 Pack) | Part No. 435548\",\n \"description\": \"OEM ANSUL 435548 Series heat detector with scissor linkage, 25-pack. Triggers mechanical release when fusible links melt. Replace at every semi-annual NFPA 17A inspection — single use only. Re-tension cable after installation.\",\n \"sku\": \"435548\", \"mpn\": \"435548\",\n \"brand\": { \"@type\": \"Brand\", \"name\": \"ANSUL\" },\n \"category\": \"Fire Suppression Equipment\"\n}\n\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"Ansul","offers":[{"title":"Default Title","offer_id":45907801768101,"sku":"435548","price":1157.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/ansul-default-title-435548-detector-series-scissor-linkage-25-pack-33278401151141_eb63a3dd-3810-4411-8324-814fc234f559.webp?v=1771286812"},{"product_id":"nmch-control-head-no-local-actuation-mechanical","title":"Pyro-Chem NMCH Control Head 551203","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003ePyro-Chem NMCH Control Head | Part No. 551203 | Kitchen Knight II \u0026amp; Monarch Series\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section {\n max-width: 100%;\n margin: 2rem 0;\n font-family: Arial, sans-serif;\n color: #333;\n }\n .accordion-item {\n border-bottom: 1px solid #ddd;\n }\n .accordion-header {\n display: flex;\n justify-content: space-between;\n padding: 2rem 0;\n cursor: pointer;\n background: none;\n border: none;\n width: 100%;\n text-align: left;\n color: #333;\n }\n .accordion-header:hover,\n .accordion-header:focus {\n color: #333;\n background: none;\n outline: none;\n }\n .accordion-title {\n font-size: 1.5rem;\n font-weight: 500;\n }\n .accordion-icon {\n font-size: 1.5rem;\n }\n .accordion-item.active .accordion-icon {\n transform: rotate(180deg);\n }\n .accordion-content {\n max-height: 0;\n overflow: hidden;\n }\n .accordion-item.active .accordion-content {\n max-height: none;\n }\n .accordion-content-inner {\n font-size: 1.4rem;\n line-height: 1.7;\n color: #555;\n padding-bottom: 2rem;\n }\n .accordion-content-inner p {\n margin: 0 0 1rem 0;\n }\n .accordion-content-inner ul {\n margin: 0 0 1rem 0;\n padding-left: 2rem;\n }\n .accordion-content-inner h3 {\n font-size: 1.4rem;\n font-weight: 600;\n color: #333;\n margin: 1.5rem 0 0.5rem 0;\n }\n .specs-table {\n width: 100%;\n border-collapse: collapse;\n }\n .specs-table th,\n .specs-table td {\n border: 1px solid #ddd;\n padding: 0.75rem 1rem;\n font-size: 1.4rem;\n text-align: left;\n }\n .specs-table th {\n background-color: #f5f5f5;\n font-weight: 600;\n color: #333;\n }\n\u003c\/style\u003e\n\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003c!-- Section 1: Product Overview --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Pyro-Chem NMCH Control Head (551203) is a high-precision mechanical command module engineered for the Kitchen Knight II (Wet Chemical) and Monarch series (Dry Chemical) fire suppression systems. In the complex safety architecture of an industrial kitchen or paint spray booth, the control head acts as the decision engine. It is responsible for monitoring thermal detection lines, processing manual overrides, and executing a synchronized discharge of extinguishing agents and utility shut-offs.\u003c\/p\u003e\n \u003cp\u003eThe NMCH (Non-Manual Control Head) designation is a critical engineering distinction. Unlike standard models, the 551203 is designed for installations where local manual actuation at the cylinder is either physically inaccessible or prohibited by safety protocols. By relying exclusively on remote manual pull stations, the NMCH allows for a streamlined, tamper-resistant remote logic installation. For fire protection stakeholders, the 551203 is the definitive choice for centralized, multi-cylinder scalability in high-volume environments.\u003c\/p\u003e\n\n \u003ch3\u003eTension-Release Principle\u003c\/h3\u003e\n \u003cp\u003eThe NMCH operates on a mechanical equilibrium. A continuous loop of stainless steel cable, held under precise tension by fusible links, keeps the internal spring-loaded firing pin in a cocked position. When a link melts or a remote pull station is activated, the tension drops instantly. The resulting kinetic energy ensures a high firing pin strike force against the activation cartridge.\u003c\/p\u003e\n\n \u003ch3\u003ePneumatic Pulse Hydraulics\u003c\/h3\u003e\n \u003cp\u003eUpon puncture, the 16-gram CO2 cartridge releases a concentrated burst of gas into the actuation manifold. This pneumatic pulse travels through the actuation piping to the system valve actuators (SVA) on each agent cylinder. The NMCH is engineered to manage the volume required to actuate up to five cylinders simultaneously, ensuring a uniform discharge across the largest cooking lines.\u003c\/p\u003e\n\n \u003ch3\u003eSequential Utility Interlock\u003c\/h3\u003e\n \u003cp\u003eThe 551203 is designed with internal cam interfaces that allow for the simultaneous execution of auxiliary functions. As the firing pin drops, the mechanical rotation of the cam trips a mechanical gas valve and toggles auxiliary microswitches, ensuring that the fuel source is severed and exhaust fans are managed at the exact millisecond the suppression agent begins to flow.\u003c\/p\u003e\n\n \u003ch3\u003eMulti-Cylinder Scalability\u003c\/h3\u003e\n \u003cp\u003eIn large-scale operations like hospital cafeterias, a single agent tank is rarely sufficient. The 551203 allows for a modular bank of up to five tanks to be controlled by a single head. This reduces the number of failure points and simplifies the semi-annual inspection process.\u003c\/p\u003e\n\n \u003ch3\u003eTamper-Resistant Remote Logic\u003c\/h3\u003e\n \u003cp\u003eIn public-access areas or high-traffic industrial zones, having a manual pull handle directly on the cylinder can lead to accidental discharges. The NMCH moves the manual interface to remote pull stations located along the path of egress, ensuring the system is only triggered by personnel safely exiting the hazard zone.\u003c\/p\u003e\n\n \u003ch3\u003eListed System Integrity\u003c\/h3\u003e\n \u003cp\u003eEvery component is part of a tested and approved safety envelope. The 551203 is the exact control head used during rigorous UL testing. Utilizing this OEM part protects the owner from insurance-related liability and fire marshal red-tags.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 2: Applications \u0026 Use Cases --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eApplications \u0026amp; Use Cases\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eIndustrial Paint Spray Booths:\u003c\/strong\u003e Integrated with the Monarch system to protect plenums, ducts, and open-front work areas.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLarge-Scale Institutional Kitchens:\u003c\/strong\u003e Providing the massive 5-tank capacity required for stadium concessions and hospital cook lines.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRemote Mechanical Rooms:\u003c\/strong\u003e Where agent cylinders are stored away from the kitchen hood, necessitating a remote-only manual trigger.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHazmat Storage Locker Protection:\u003c\/strong\u003e Providing a rugged, mechanical fail-safe for lockers containing flammable liquids or chemicals.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRetrofit Modernization:\u003c\/strong\u003e Replacing aged or non-compliant control units during 12-year overhauls to restore factory reliability.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 3: Technical Specifications --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eFeature\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eManufacturer\u003c\/td\u003e\n \u003ctd\u003ePyro-Chem (A Johnson Controls Brand)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePart Number\u003c\/td\u003e\n \u003ctd\u003e551203 (Model NMCH)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n \u003ctd\u003eKitchen Knight II \/ Monarch Series\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eActuation Capacity\u003c\/td\u003e\n \u003ctd\u003e1 to 5 Agent Cylinders (Simultaneous)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePropellant Source\u003c\/td\u003e\n \u003ctd\u003e16-Gram CO2 Cartridge\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDetection Interface\u003c\/td\u003e\n \u003ctd\u003eTension-Release Principle (1\/16\" SS Cable)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMax Cable Run\u003c\/td\u003e\n \u003ctd\u003e150 Feet (45.7 m)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompliance\u003c\/td\u003e\n \u003ctd\u003eUL Listed, ULC Listed, Meets NFPA 17\/17A\/96\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 4: Installation \u0026 Compliance --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eInstallation \u0026amp; Compliance\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eAxial Alignment and Tension Calibration\u003c\/h3\u003e\n \u003cp\u003eDuring installation, the detection line must be tensioned to exact specifications. Over-tensioning can lead to nuisance trips, while under-tensioning can cause the firing pin to strike with insufficient force.\u003c\/p\u003e\n\n \u003ch3\u003eSemi-Annual Functional Audit\u003c\/h3\u003e\n \u003cp\u003eEvery 6 months, a technician must perform a silent trip of the NMCH. This involves removing the CO2 cartridge and triggering the system via a remote pull station to ensure all internal cams and microswitches toggle correctly.\u003c\/p\u003e\n\n \u003ch3\u003eFactory-Stamped Weight Verification\u003c\/h3\u003e\n \u003cp\u003eThe 16-gram activation cartridge must be weighed during every inspection. If the weight has deviated by more than 0.5g from the factory-stamped weight, it must be replaced immediately to ensure the pneumatic pulse remains powerful enough.\u003c\/p\u003e\n\n \u003ch3\u003eMounting Integrity Protocol\u003c\/h3\u003e\n \u003cp\u003eBecause the NMCH manages detection line tension, it must be mounted to a rigid structural member. Any flex in the mounting surface can lead to a loss of cable tension over time.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 5: FAQ --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eWhat is the difference between NMCH and MCH?\u003c\/h3\u003e\n \u003cp\u003eThe MCH (Manual Control Head) features a local pull handle directly on the unit. The NMCH (Non-Manual) lacks this handle and is intended for systems where manual activation happens exclusively at remote pull stations.\u003c\/p\u003e\n\n \u003ch3\u003eCan I use the 551203 with an Ansul R-102 cylinder?\u003c\/h3\u003e\n \u003cp\u003eNo. While both brands are owned by Johnson Controls, the 551203 is specifically listed for Pyro-Chem hardware. Mixing brands is a major code violation and will void the UL listing and insurance coverage.\u003c\/p\u003e\n\n \u003ch3\u003eHow many microswitches can I install in the NMCH?\u003c\/h3\u003e\n \u003cp\u003eThe NMCH is designed to accommodate up to two auxiliary microswitches (SPDT or DPDT). These are used to shut down power to appliances, exhaust fans, or to send an alarm signal to the building's main fire panel.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n const headers = document.querySelectorAll('.accordion-header');\n headers.forEach(header =\u003e {\n header.addEventListener('click', function() {\n this.parentElement.classList.toggle('active');\n });\n });\n});\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Pyro-Chem NMCH Control Head\",\n \"description\": \"UL Listed Non-Manual Control Head for Pyro-Chem Kitchen Knight II and Monarch fire suppression systems. Actuates 1 to 5 agent cylinders simultaneously via 16-gram CO2 cartridge. Tension-release detection via 1\/16 inch stainless steel cable up to 150 feet. Remote-only actuation with up to 2 auxiliary microswitches. Meets NFPA 17, 17A, and 96.\",\n \"sku\": \"551203\",\n \"mpn\": \"551203\",\n \"brand\": {\n \"@type\": \"Brand\",\n \"name\": \"Pyro-Chem\"\n },\n \"manufacturer\": {\n \"@type\": \"Organization\",\n \"name\": \"Pyro-Chem (A Johnson Controls Brand)\"\n },\n \"category\": \"Fire Suppression Equipment\",\n \"additionalProperty\": [\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Part Number\",\n \"value\": \"551203 (Model NMCH)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"System Compatibility\",\n \"value\": \"Kitchen Knight II \/ Monarch Series\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Actuation Capacity\",\n \"value\": \"1 to 5 Agent Cylinders (Simultaneous)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Propellant Source\",\n \"value\": \"16-Gram CO2 Cartridge\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Detection Interface\",\n \"value\": \"Tension-Release Principle (1\/16 inch SS Cable)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Max Cable Run\",\n \"value\": \"150 Feet (45.7 m)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Compliance\",\n \"value\": \"UL Listed, ULC Listed, Meets NFPA 17\/17A\/96\"\n }\n ]\n}\n\u003c\/script\u003e\n\n\n\u003c\/body\u003e","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":45907804291237,"sku":"551203","price":599.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pyrochem-default-title-pyro-chem-nmch-control-head-551203-33278405968037_33216b5d-5e3e-41bd-9aed-e811e919747f.webp?v=1771286810"},{"product_id":"ansul-pcl-300-551194","title":"PCL-300 551194 for Pyro-Chem","description":"\u003cdiv class=\"ansul-product-section\"\u003e\n \u003cstyle\u003e\n .ansul-product-section {\n max-width: 100%;\n margin: 2rem 0;\n font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;\n color: #333;\n }\n \n .accordion-item {\n border-bottom: 1px solid #e5e5e5;\n }\n \n .accordion-item:first-child {\n border-top: 1px solid #e5e5e5;\n }\n \n .accordion-header {\n display: flex;\n justify-content: space-between;\n align-items: center;\n padding: 2.25rem 0;\n cursor: pointer;\n background: none;\n border: none;\n width: 100%;\n text-align: left;\n transition: background-color 0.3s ease;\n }\n \n .accordion-header:hover {\n background-color: #1a1a1a;\n }\n \n .accordion-header:hover .accordion-title,\n .accordion-header:hover .accordion-icon {\n color: #ffffff;\n }\n \n .accordion-title {\n font-size: 1.5rem;\n font-weight: 500;\n color: #1a1a1a;\n letter-spacing: 0.02em;\n margin: 0;\n transition: color 0.3s ease;\n }\n \n .accordion-icon {\n font-size: 1.875rem;\n font-weight: 300;\n color: #666;\n transition: transform 0.3s ease, color 0.3s ease;\n line-height: 1;\n }\n \n .accordion-item.active .accordion-icon {\n transform: rotate(180deg);\n }\n \n .accordion-content {\n max-height: 0;\n overflow: hidden;\n transition: 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margin: 1.5rem 0 0 0;\n }\n \n .specs-table tr {\n border-bottom: 1px solid #e5e5e5;\n }\n \n .specs-table tr:last-child {\n border-bottom: none;\n }\n \n .specs-table td {\n padding: 1.3125rem 0;\n font-size: 1.40625rem;\n vertical-align: top;\n }\n \n .specs-table td:first-child {\n font-weight: 600;\n color: #333;\n width: 40%;\n padding-right: 2.25rem;\n }\n \n .specs-table td:last-child {\n color: #555;\n }\n\n \/* Responsive *\/\n @media (max-width: 768px) {\n .accordion-header {\n padding: 1.875rem 0;\n }\n\n .accordion-title {\n font-size: 1.25rem;\n }\n\n .specs-table td:first-child {\n width: 45%;\n padding-right: 1.5rem;\n }\n\n .specs-table td {\n padding: 1.125rem 0;\n font-size: 1.25rem;\n }\n\n .accordion-content-inner {\n font-size: 1.25rem;\n }\n\n .accordion-content-inner li {\n font-size: 1.25rem;\n }\n }\n \u003c\/style\u003e\n\n \u003cdiv class=\"accordion\"\u003e\n \u003c!-- Product Overview --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\" aria-expanded=\"false\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eProduct Overview\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Pyro-Chem PCL-300 Mechanical Control Head (Part Number 551194) is the primary actuation interface designed exclusively for Pyro-Chem Kitchen Knight II wet chemical fire suppression systems utilizing 3-liter cylinder configurations. In a high-pressure fire emergency, the effectiveness of the extinguishing agent is irrelevant if the system fails to trigger. The PCL-300 serves as the \"mechanical brain\" of your valve assembly, translating a physical pull or a thermal break into a life-saving discharge.\u003c\/p\u003e\n \n \u003cp\u003eSpecifically engineered to meet the rigorous demands of commercial cooking environments, the PCL-300 is built to withstand high ambient temperatures, grease accumulation, and constant industrial tension. By integrating both manual and automatic trigger paths, this control head ensures that a kitchen fire is addressed the moment it is detected.\u003c\/p\u003e\n\n \u003ch3\u003eThe Physics of Actuation: Force-Transfer and Kinetic Energy\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePneumatic-Mechanical Hybridization:\u003c\/strong\u003e The PCL-300 manages the high tension required for cable-run detection while providing a low-friction release for the cylinder valve. This ensures that even in systems with multiple bends in the cable run, the force transfer is sufficient to depress the valve stem or pierce the disc.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFusible Link Sensitivity:\u003c\/strong\u003e When integrated into the detection line, the PCL-300 maintains a constant \"bias tension.\" When a fire occurs and a fuse link melts, the sudden loss of tension triggers a spring-loaded firing pin. This precision ensures your fire safety system reacts instantly to thermal events while ignoring the minor vibrations common in a busy kitchen.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eManual Override Kinematics:\u003c\/strong\u003e The manual pull station path within the PCL-300 is a direct-drive mechanical override. This ensures that if a chef sees a fire before the automatic detection reacts, the system can be triggered instantly with minimal effort.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhy \"Genuine Pyro-Chem\" is Non-Negotiable\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eUL 300 System Listing:\u003c\/strong\u003e The UL 300 standard is a \"System Listing,\" meaning performance is only guaranteed when every component is the specific part tested. Using a non-OEM control head can void the system's UL listing and cause a failure during a fire safety audit.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e3-Liter Precision:\u003c\/strong\u003e The PCL-300 is specifically balanced for the 3-liter cylinder series. In the world of fire extinguisher systems, precision matters; larger control heads may provide too much force and damage the valve, while smaller ones may fail to actuate.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCorrosion-Resistant Housing:\u003c\/strong\u003e Kitchens are aggressive environments. Pyro-Chem OEM control heads are finished with specialized coatings to prevent internal gears from seizing due to grease, steam, and cleaning chemicals.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Applications \u0026 Use Cases --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\" aria-expanded=\"false\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eApplications \u0026amp; Use Cases\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe PCL-300 is the specialized choice for \"Small-to-Medium\" Hazard Zones:\u003c\/p\u003e\n\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eSpecialized Cooking Batteries:\u003c\/strong\u003e Ideal for protecting localized hazards such as a single fryer bank or a small griddle.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFood Trucks \u0026amp; Mobile Kitchens:\u003c\/strong\u003e The robust mechanical nature of the PCL-300 is the standard for mobile units where electrical components might fail due to road vibration.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstitutional Food Service:\u003c\/strong\u003e Providing reliable, automated protection in schools and hospitals where safety systems must be reliable.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSystem Retrofits:\u003c\/strong\u003e The primary replacement part for aging Pyro-Chem systems where the original head has suffered mechanical wear.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Technical Specifications --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\" aria-expanded=\"false\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eTechnical Specifications\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eManufacturer\u003c\/td\u003e\n \u003ctd\u003ePyro-Chem (A Johnson Controls Brand)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePart Number\u003c\/td\u003e\n \u003ctd\u003e551194\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eModel\u003c\/td\u003e\n \u003ctd\u003ePCL-300\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCylinder Compatibility\u003c\/td\u003e\n \u003ctd\u003e3-Liter Wet Chemical\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eActivation Type\u003c\/td\u003e\n \u003ctd\u003eMechanical \/ Manual \/ Automatic\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eListings\u003c\/td\u003e\n \u003ctd\u003eUL 300 Listed, NFPA 17A, NFPA 96\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Compliance \u0026 Safety --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\" aria-expanded=\"false\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eCompliance \u0026amp; Safety\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe PCL-300 is not a consumer-serviceable part. It must be installed by a technician who understands fire safety protocols and Pyro-Chem maintenance:\u003c\/p\u003e\n\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eSemi-Annual Inspection:\u003c\/strong\u003e Per NFPA 17A, the control head must be inspected every six months. This includes verifying the internal springs and ensuring the cylinder is properly pressurized.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eThe \"Post-Discharge\" Rule:\u003c\/strong\u003e After a discharge, the PCL-300 should be cleaned and inspected. In many cases, internal components like the firing pin may require replacement to ensure the system can be re-armed.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInterlock Coordination:\u003c\/strong\u003e Most systems require an integrated gas shut off valve. The PCL-300 can be configured to trigger a gas valve shut off simultaneously with the agent discharge.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- FAQ --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\" aria-expanded=\"false\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eFAQ\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003e\u003cstrong\u003eCan I use the PCL-300 on a 6-liter or 12-liter cylinder?\u003c\/strong\u003e\u003cbr\u003e\n No. It is specifically listed for 3-liter cylinders. Larger systems require different control heads calibrated for higher actuation forces.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eWhere can I get system service?\u003c\/strong\u003e\u003cbr\u003e\n If your system has discharged, you must contact a professional for service. You can find certified technicians by searching for a fire safety provider near you.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eDoes this work with other brands?\u003c\/strong\u003e\u003cbr\u003e\n While you might have other fire extinguishers in your facility for general use, kitchen systems are proprietary. The PCL-300 is only for use with Pyro-Chem Kitchen Knight II systems.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eWhat accessories are needed?\u003c\/strong\u003e\u003cbr\u003e\n You will typically need a manual pull station, stainless steel cable, and the correct mounting brackets or cabinet pass-throughs. Ensure staff are fully aware of all available safety tools.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cscript\u003e\n document.addEventListener('DOMContentLoaded', function() {\n const accordionHeaders = document.querySelectorAll('.accordion-header');\n \n accordionHeaders.forEach(header =\u003e {\n header.addEventListener('click', function() {\n const accordionItem = this.parentElement;\n const isActive = accordionItem.classList.contains('active');\n \n \/\/ Toggle current item\n accordionItem.classList.toggle('active');\n this.setAttribute('aria-expanded', !isActive);\n });\n });\n });\n \u003c\/script\u003e\n\n \u003c!-- JSON-LD Product Schema (hidden from customers) --\u003e\n \u003cscript type=\"application\/ld+json\"\u003e\n {\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Pyro-Chem PCL-300 Mechanical Control Head\",\n \"description\": \"3-Liter Systems - Primary actuation interface for Pyro-Chem Kitchen Knight II wet chemical fire suppression systems with mechanical\/manual\/automatic activation\",\n \"sku\": \"551194\",\n \"mpn\": \"551194\",\n \"brand\": {\n \"@type\": \"Brand\",\n \"name\": \"Pyro-Chem\"\n },\n \"manufacturer\": {\n \"@type\": \"Organization\",\n \"name\": \"Pyro-Chem (A Johnson Controls Brand)\"\n },\n \"additionalProperty\": [\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Model\",\n \"value\": \"PCL-300\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Cylinder Compatibility\",\n \"value\": \"3-Liter Wet Chemical\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Activation Type\",\n \"value\": \"Mechanical \/ Manual \/ Automatic\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Listings\",\n \"value\": \"UL 300 Listed, NFPA 17A, NFPA 96\"\n }\n ],\n \"category\": \"Fire Suppression System Parts\"\n }\n \u003c\/script\u003e\n\u003c\/div\u003e","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":45942198042789,"sku":"551194","price":662.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pyrochem-default-title-pcl-300-551194-for-pyro-chem-33359969812645_afafe336-e556-417f-8ffa-06da905802e7.webp?v=1771286658"},{"product_id":"pyrochem-rl160-wet-chemical-1-6gal-553176","title":"Pyro-Chem RL160 Wet Chemical 1.6Gal 553176","description":"","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":45948665397413,"sku":"553176","price":159.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pyrochem-default-title-pyro-chem-rl160-wet-chemical-1-6gal-553176-33373517611173_01726771-a77e-4b43-901e-83382ad0584c.webp?v=1771286626"},{"product_id":"pyrochem-pneumatic-discharge-adapter-550829","title":"Pyro-Chem Pneumatic Discharge Adapter 550829","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003ePyro-Chem PDA-D2 Pneumatic Discharge Adapter | Part No. 550829\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section { max-width: 100%; margin: 2rem 0; font-family: Arial, sans-serif; color: #333; }\n .accordion-item { border-bottom: 1px solid #ddd; }\n .accordion-header { display: flex; justify-content: space-between; padding: 2rem 0; cursor: pointer; background: none; border: none; width: 100%; text-align: left; color: #333; }\n .accordion-header:hover, .accordion-header:focus { color: #333; background: none; outline: none; }\n .accordion-title { font-size: 1.5rem; font-weight: 500; }\n .accordion-icon { font-size: 1.5rem; }\n .accordion-item.active .accordion-icon { transform: rotate(180deg); }\n .accordion-content { max-height: 0; overflow: hidden; }\n .accordion-item.active .accordion-content { max-height: none; }\n .accordion-content-inner { font-size: 1.4rem; line-height: 1.7; color: #555; padding-bottom: 2rem; }\n .accordion-content-inner p { margin: 0 0 1rem 0; }\n .accordion-content-inner ul { margin: 0 0 1rem 0; padding-left: 2rem; }\n .accordion-content-inner h3 { font-size: 1.4rem; font-weight: 600; color: #333; margin: 1.5rem 0 0.5rem 0; }\n .specs-table { width: 100%; border-collapse: collapse; }\n .specs-table th, .specs-table td { border: 1px solid #ddd; padding: 0.75rem 1rem; font-size: 1.4rem; text-align: left; }\n .specs-table th { background-color: #f5f5f5; font-weight: 600; color: #333; }\n\u003c\/style\u003e\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Pyro-Chem 550829 PDA-D2 is a pneumatic discharge adapter designed for use with Pyro-Chem and compatible ANSUL dry chemical suppression systems, including Monarch Industrial and Kitchen Knight II configurations. The PDA-D2 connects the pneumatic actuation system to the dry valve, enabling clean and efficient agent discharge by ensuring the pneumatic release mechanism engages the valve's discharge actuator with full actuation force. This adapter is an essential spare or replacement part when performing maintenance, system testing, or servicing the actuation interface between the control head and the agent cylinder valve.\u003c\/p\u003e\n \u003cp\u003eIn pneumatically actuated dry chemical fire suppression systems, the discharge adapter is the mechanical interface that translates the control head's nitrogen cartridge actuation pressure into valve opening force. A worn, damaged, or improperly seated pneumatic discharge adapter can result in a partial actuation — where the valve opens but fails to achieve full flow, resulting in incomplete agent discharge and inadequate fire suppression coverage. The OEM 550829 PDA-D2 is manufactured to the precise dimensional and pressure tolerance specifications required for full Pyro-Chem system actuation reliability.\u003c\/p\u003e\n \u003cp\u003eFor fire protection contractors servicing Pyro-Chem and compatible ANSUL dry chemical systems, the 550829 is a critical pyro chem fire suppression system parts item for system maintenance kits and post-discharge service inventories. The pyro chem nozzle chart and pyro chem kitchen knight manual provide the full actuation system service specifications that include the PDA-D2 in the maintenance procedure. Authorized pyro chem distributors carry the 550829 and can provide pyro chem price list volume pricing for large-scale service programs. Semi-annual functional testing per NFPA 17A must verify the pneumatic discharge adapter is seated correctly and the actuation system cycles cleanly.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003ePyro-Chem (A Johnson Controls Brand)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e550829\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003ePDA-D2\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003ePneumatic Discharge Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCompatible Systems\u003c\/td\u003e\n\u003ctd\u003ePyro-Chem Monarch Industrial, Kitchen Knight II; compatible ANSUL dry chemical systems\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003ePneumatic actuation-to-valve discharge interface\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL Listed, OEM Original\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eMaintenance \u0026amp; Compliance (NFPA 17A)\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eSemi-Annual Inspection\u003c\/h3\u003e\n \u003cp\u003eDuring NFPA 17A semi-annual inspections, verify the 550829 pneumatic discharge adapter is correctly seated on the valve discharge actuator and shows no signs of corrosion, physical damage, or deformation. A damaged adapter can prevent full actuation force from reaching the valve — resulting in a partial or failed discharge during a real fire event. Remove and inspect the adapter as part of the control head and actuation system verification procedure per the pyro chem kitchen knight manual.\u003c\/p\u003e\n \u003ch3\u003ePost-Discharge Service\u003c\/h3\u003e\n \u003cp\u003eAfter any system discharge, remove and inspect the 550829 PDA-D2 for damage caused by the actuation event. Discharge forces can deform the adapter's engagement surfaces. Replace the adapter with a new 550829 OEM unit if any deformation is found — never reinstall a damaged pneumatic discharge adapter. Document the adapter condition and replacement in the fire suppression system inspection record.\u003c\/p\u003e\n \u003ch3\u003eInstallation Verification\u003c\/h3\u003e\n \u003cp\u003eWhen reinstalling the PDA-D2 after any service event, verify the adapter is fully and correctly engaged with the valve discharge actuator before re-arming the control head. An adapter that is partially seated will fail to deliver full actuation force to the valve during discharge. Verify the actuation system function using the Pyro-Chem-specified test procedure before returning the system to armed service status.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eIs the 550829 compatible with ANSUL systems?\u003c\/h3\u003e\n \u003cp\u003eThe PDA-D2 550829 is designed for Pyro-Chem dry chemical systems and listed compatible with certain ANSUL dry chemical system configurations including Monarch Industrial setups. Verify ANSUL system compatibility with the specific system model's service documentation or consult your authorized pyro chem supply distributor before installation. Not all ANSUL system configurations share the same actuation interface geometry as Pyro-Chem systems.\u003c\/p\u003e\n \u003ch3\u003eCan the PDA-D2 be used on wet chemical systems?\u003c\/h3\u003e\n \u003cp\u003eThe 550829 PDA-D2 is specifically designed for dry chemical system discharge valve actuation. Pyro-Chem wet chemical systems use different actuation mechanisms. Verify the correct actuation adapter for your specific system configuration using the pyro chem kitchen knight manual or pyro chem kitchen knight 2 documentation before installation.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n document.querySelectorAll('.accordion-header').forEach(h =\u003e h.addEventListener('click', function() { this.parentElement.classList.toggle('active'); }));\n});\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Pyro-Chem PDA-D2 Pneumatic Discharge Adapter | Part No. 550829\",\n \"description\": \"UL Listed Pyro-Chem PDA-D2 pneumatic discharge adapter for Monarch Industrial, Kitchen Knight II, and compatible ANSUL dry chemical systems. Connects pneumatic actuation system to discharge valve. Semi-annual inspection per NFPA 17A. Replace if deformed after discharge.\",\n \"sku\": \"550829\", \"mpn\": \"PDA-D2\",\n \"brand\": { \"@type\": \"Brand\", \"name\": \"Pyro-Chem\" },\n \"manufacturer\": { \"@type\": \"Organization\", \"name\": \"Pyro-Chem (A Johnson Controls Brand)\" },\n \"category\": \"Fire Suppression Equipment\"\n}\n\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":45948666020005,"sku":"550829","price":88.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pyrochem-default-title-pyro-chem-pneumatic-discharge-adapter-550829-33373523607717_710b4f5e-6425-4e20-8f87-037e494d0dec.webp?v=1771286624"},{"product_id":"pyrochem-dry-valve-rebuild-kit-550037","title":"Pyro-Chem Dry Valve Rebuild Kit 550037","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003ePyro-Chem Dry Valve Rebuild Kit | Part No. 550037\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section { max-width: 100%; margin: 2rem 0; font-family: Arial, sans-serif; color: #333; }\n .accordion-item { border-bottom: 1px solid #ddd; }\n .accordion-header { display: flex; justify-content: space-between; padding: 2rem 0; cursor: pointer; background: none; border: none; width: 100%; text-align: left; color: #333; }\n .accordion-header:hover, .accordion-header:focus { color: #333; background: none; outline: none; }\n .accordion-title { font-size: 1.5rem; font-weight: 500; }\n .accordion-icon { font-size: 1.5rem; }\n .accordion-item.active .accordion-icon { transform: rotate(180deg); }\n .accordion-content { max-height: 0; overflow: hidden; }\n .accordion-item.active .accordion-content { max-height: none; }\n .accordion-content-inner { font-size: 1.4rem; line-height: 1.7; color: #555; padding-bottom: 2rem; }\n .accordion-content-inner p { margin: 0 0 1rem 0; }\n .accordion-content-inner ul { margin: 0 0 1rem 0; padding-left: 2rem; }\n .accordion-content-inner h3 { font-size: 1.4rem; font-weight: 600; color: #333; margin: 1.5rem 0 0.5rem 0; }\n .specs-table { width: 100%; border-collapse: collapse; }\n .specs-table th, .specs-table td { border: 1px solid #ddd; padding: 0.75rem 1rem; font-size: 1.4rem; text-align: left; }\n .specs-table th { background-color: #f5f5f5; font-weight: 600; color: #333; }\n\u003c\/style\u003e\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Pyro-Chem 550037 Dry Valve Rebuild Kit is an OEM service kit for Pyro-Chem dry chemical fire suppression system discharge valves — used in Kitchen Knight II and other Pyro-Chem dry chemical system configurations. The 550037 contains the essential replacement components to restore valve integrity, sealing, and operational reliability after a system discharge or during scheduled maintenance. It is the dry chemical counterpart to the 550698 Wet Valve Rebuild Kit — the two kits address the two primary Pyro-Chem product lines with their distinct agent types and valve material requirements.\u003c\/p\u003e\n \u003cp\u003ePyro-Chem dry chemical systems — including configurations using potassium bicarbonate fire extinguisher agent and ABC dry chemical formulations — subject valve internals to different chemical stresses than wet chemical systems. Dry chemical agents can absorb moisture and form hygroscopic compounds that attack valve seals over multi-year service intervals, while the abrasive nature of powder agents can accelerate wear on valve stem and piston components. The 550037 rebuild kit uses elastomers and components specifically selected for dry chemical agent compatibility, ensuring the rebuilt valve maintains its rated discharge performance throughout the next service interval.\u003c\/p\u003e\n \u003cp\u003eFor fire protection contractors managing Pyro-Chem dry chemical fire suppression system service, the 550037 is a mandatory item for every 6-year internal examination and every post-discharge service. Keeping both the 550037 (dry) and 550698 (wet) rebuild kits in pyro chem supply inventory ensures complete valve service capability for the full Pyro-Chem product lineup. Authorized pyro chem distributors carry both kits at the pyro chem price list volume pricing. The pyro chem kitchen knight manual and Pyro-Chem Monarch system documentation provide the complete valve rebuild procedures using the 550037 kit components.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003ePyro-Chem (A Johnson Controls Brand)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e550037\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eKit Type\u003c\/td\u003e\n\u003ctd\u003eDry Valve Rebuild Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCompatible Systems\u003c\/td\u003e\n\u003ctd\u003ePyro-Chem dry chemical fire suppression systems\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eAgent Compatibility\u003c\/td\u003e\n\u003ctd\u003eDry chemical agents (potassium bicarbonate, ABC dry chemical)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eService Interval\u003c\/td\u003e\n\u003ctd\u003e6-year internal examination and post-discharge\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL Listed, OEM Original\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eService Protocol (NFPA 10 \u0026amp; 17A)\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003e6-Year Internal Examination\u003c\/h3\u003e\n \u003cp\u003eNFPA 10 requires internal examination of dry chemical suppression cylinders at the 6-year service interval. During this examination, remove the discharge valve, inspect all internal components, and replace all soft goods with the contents of the 550037 kit. Dry chemical powder that has packed or caked inside the valve body must be completely removed before installing the new valve components. Residual powder contamination can prevent the new seals from seating correctly and will cause an immediate discharge valve leak on pressurization.\u003c\/p\u003e\n \u003ch3\u003ePost-Discharge Service\u003c\/h3\u003e\n \u003cp\u003eAfter any Pyro-Chem dry chemical system discharge, the cylinder discharge valve must be fully rebuilt using the 550037 kit before recharging. The 550037 rebuild resets all valve internal components to factory specification, ensuring reliable discharge performance for the next service interval. Document the rebuild in the fire suppression system inspection record and affix a new service label per the Pyro-Chem system documentation requirements.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eCan the 550037 be used on wet chemical system valves?\u003c\/h3\u003e\n \u003cp\u003eNo. The 550037 is specifically formulated for dry chemical system valves. The 550698 Wet Valve Rebuild Kit is the correct kit for Pyro-Chem wet chemical (Kitchen Knight II) cylinder valves. The wet and dry kits use different elastomer formulations for their respective agent chemistries — using the wrong kit creates an agent compatibility risk and voids the UL listing.\u003c\/p\u003e\n \u003ch3\u003eIs the 550037 compatible with pyro chem monarch systems?\u003c\/h3\u003e\n \u003cp\u003eThe 550037 is designed for Pyro-Chem dry chemical system valve assemblies. Verify compatibility with the specific pyro chem monarch or other Pyro-Chem dry chemical platform using the system's service manual or by consulting authorized pyro chem distributors. The pyro chem nozzle chart and system-specific documentation confirm the correct rebuild kit for each Pyro-Chem dry chemical configuration.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n document.querySelectorAll('.accordion-header').forEach(h =\u003e h.addEventListener('click', function() { this.parentElement.classList.toggle('active'); }));\n});\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Pyro-Chem Dry Valve Rebuild Kit | Part No. 550037\",\n \"description\": \"UL Listed OEM Pyro-Chem dry valve rebuild kit for dry chemical fire suppression system discharge valves. Required at 6-year internal examination and post-discharge per NFPA 10 and NFPA 17A. Dry chemical-compatible elastomers. Not for wet chemical valves — see 550698.\",\n \"sku\": \"550037\", \"mpn\": \"550037\",\n \"brand\": { \"@type\": \"Brand\", \"name\": \"Pyro-Chem\" },\n \"manufacturer\": { \"@type\": \"Organization\", \"name\": \"Pyro-Chem (A Johnson Controls Brand)\" },\n \"category\": \"Fire Suppression Equipment\"\n}\n\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":45948685320357,"sku":"550037","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pyrochem-default-title-pyro-chem-dry-valve-rebuild-kit-550037-33373529899173_ed7502c2-8786-4e76-b926-dc2d3e3423f7.webp?v=1771286623"},{"product_id":"pyrochem-metal-blow-off-caps-10-pack-551528","title":"Pyro-Chem Metal Blow off caps (10 Pack) OEM - 551528","description":"","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":45948689809573,"sku":"551528","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pyrochem-default-title-oem-pyro-chem-metal-blow-off-caps-10-pack-551528-33373533208741_ec1cce95-1858-4540-beac-893df4d06509.webp?v=1771286620"},{"product_id":"pyrochem-two-switch-kit-dpdt-551155","title":"Pyro-Chem Two Switch Kit DPDT 551155","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003ePyro-Chem Two Switch Kit DPDT | Part No. 551155\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section { max-width: 100%; margin: 2rem 0; font-family: Arial, sans-serif; color: #333; }\n .accordion-item { border-bottom: 1px solid #ddd; }\n .accordion-header { display: flex; justify-content: space-between; padding: 2rem 0; cursor: pointer; background: none; border: none; width: 100%; text-align: left; color: #333; }\n .accordion-header:hover, .accordion-header:focus { color: #333; background: none; outline: none; }\n .accordion-title { font-size: 1.5rem; font-weight: 500; }\n .accordion-icon { font-size: 1.5rem; }\n .accordion-item.active .accordion-icon { transform: rotate(180deg); }\n .accordion-content { max-height: 0; overflow: hidden; }\n .accordion-item.active .accordion-content { max-height: none; }\n .accordion-content-inner { font-size: 1.4rem; line-height: 1.7; color: #555; padding-bottom: 2rem; }\n .accordion-content-inner p { margin: 0 0 1rem 0; }\n .accordion-content-inner ul { margin: 0 0 1rem 0; padding-left: 2rem; }\n .accordion-content-inner h3 { font-size: 1.4rem; font-weight: 600; color: #333; margin: 1.5rem 0 0.5rem 0; }\n .specs-table { width: 100%; border-collapse: collapse; }\n .specs-table th, .specs-table td { border: 1px solid #ddd; padding: 0.75rem 1rem; font-size: 1.4rem; text-align: left; }\n .specs-table th { background-color: #f5f5f5; font-weight: 600; color: #333; }\n\u003c\/style\u003e\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Pyro-Chem 551155 Two Switch Kit provides two factory-approved dual-pole, dual-throw (DPDT) micro switches for Pyro-Chem kitchen fire suppression systems. Each DPDT micro switch provides two independent switch functions — giving the Kitchen Knight II system coordinated control over two separate electrical circuits simultaneously during a system discharge. Common applications include electrical appliance shutdown (cutting power to cooking equipment), exhaust fan control, alarm signalling, and other auxiliary interlocks that must respond automatically when the suppression system activates.\u003c\/p\u003e\n \u003cp\u003eThe dpdt micro switch configuration is specifically required for installations where two separate, independently controllable electrical circuits must respond to a single system discharge event. Unlike a single-pole switch that controls one circuit, the DPDT dpdt switch provides two independent contact sets — each with normally-open and normally-closed positions — allowing the system to simultaneously shut down cooking equipment and activate an alarm, or control two separate ventilation zones, from a single actuation signal.\u003c\/p\u003e\n \u003cp\u003eFor fire protection contractors completing Pyro-Chem Kitchen Knight II installations, the 551155 two switch kit ensures the system's auxiliary interlock capabilities are fully configured with factory-listed switch hardware. Authorized pyro chem distributors carry the 551155 as a standard pyro chem fire suppression system parts item. The pyro chem kitchen knight manual provides the wiring specifications for the two-switch configuration in Kitchen Knight II systems. Semi-annual testing per NFPA 17A and NFPA 96 must verify both DPDT switch functions operate correctly during a simulated system discharge test.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003ePyro-Chem (A Johnson Controls Brand)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e551155\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSwitch Type\u003c\/td\u003e\n\u003ctd\u003eDPDT (Dual-Pole, Dual-Throw) micro switch\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e2 switches per kit\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCompatible Systems\u003c\/td\u003e\n\u003ctd\u003ePyro-Chem Kitchen Knight II\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eAppliance shutdown, exhaust fan control, alarm signalling, auxiliary interlocks\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL Listed, OEM Original\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eInstallation \u0026amp; Compliance (NFPA 17A \u0026amp; 96)\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eWiring Configuration\u003c\/h3\u003e\n \u003cp\u003eInstall each DPDT micro switch per the pyro chem kitchen knight manual wiring diagram. Each switch has six terminals — two poles each with normally-open (NO), normally-closed (NC), and common (C) contacts. Map each contact set to the correct auxiliary circuit per the system design drawings. Verify polarity and circuit assignment at the Pyro-Chem control head before completing the installation. Document all switch wiring assignments in the system installation record.\u003c\/p\u003e\n \u003ch3\u003eSemi-Annual Testing\u003c\/h3\u003e\n \u003cp\u003eTest both DPDT switch functions at every semi-annual NFPA 17A and NFPA 96 inspection. Trigger a simulated system discharge and verify both switch contacts change state correctly — confirming all connected auxiliary circuits respond as designed. A switch that fails to actuate correctly during testing is an immediate red-tag deficiency requiring switch replacement with new 551155 OEM hardware. Document both switch test results in the fire suppression system inspection record.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eCan I use a single DPDT switch instead of two?\u003c\/h3\u003e\n \u003cp\u003eThe 551155 kit includes two DPDT micro switches to provide four independent contact sets — two per switch. If only two independent circuit functions are needed, one DPDT switch may be sufficient. If four independent circuit functions are needed, both switches are required. Verify the number of auxiliary interlock circuits required by the system design and local AHJ before specifying the switch configuration. The pyro chem kitchen knight manual provides configuration guidance.\u003c\/p\u003e\n \u003ch3\u003eCan generic DPDT switches be used instead of the 551155 kit?\u003c\/h3\u003e\n \u003cp\u003eNo. The 551155 OEM switches are specifically rated and listed for Pyro-Chem Kitchen Knight II system actuation forces and operating conditions. Generic dpdt switch components may not meet the mechanical actuation force, temperature rating, or cycle life required for fire suppression applications. Using non-OEM switches voids the system's UL 300 listing. Source through authorized pyro chem distributors only.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n document.querySelectorAll('.accordion-header').forEach(h =\u003e h.addEventListener('click', function() { this.parentElement.classList.toggle('active'); }));\n});\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Pyro-Chem Two Switch Kit DPDT | Part No. 551155\",\n \"description\": \"UL Listed Pyro-Chem two-switch kit with dual DPDT micro switches for Kitchen Knight II systems. Controls appliance shutdown, exhaust fans, alarms, and auxiliary interlocks during system discharge. Semi-annual testing per NFPA 17A and NFPA 96.\",\n \"sku\": \"551155\", \"mpn\": \"551155\",\n \"brand\": { \"@type\": \"Brand\", \"name\": \"Pyro-Chem\" },\n \"manufacturer\": { \"@type\": \"Organization\", \"name\": \"Pyro-Chem (A Johnson Controls Brand)\" },\n \"category\": \"Fire Suppression Equipment\"\n}\n\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":45948700033189,"sku":"551155","price":76.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pyrochem-default-title-pyro-chem-two-switch-kit-dpdt-551155-34146822979749_778c5288-95df-4251-81b7-ae6b5da53e6f.webp?v=1771286618"},{"product_id":"pyrochem-gv-200-gas-valve-551049","title":"Pyro-Chem GV-200 Gas Valve 551049","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003ePyro-Chem GV-200 Mechanical Gas Valve | Part No. 551049 | Kitchen Knight II Series\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section {\n max-width: 100%;\n margin: 2rem 0;\n font-family: Arial, sans-serif;\n color: #333;\n }\n .accordion-item {\n border-bottom: 1px solid #ddd;\n }\n .accordion-header {\n display: flex;\n justify-content: space-between;\n padding: 2rem 0;\n cursor: pointer;\n background: none;\n border: none;\n width: 100%;\n text-align: left;\n color: #333;\n }\n .accordion-header:hover,\n .accordion-header:focus {\n color: #333;\n background: none;\n outline: none;\n }\n .accordion-title {\n font-size: 1.5rem;\n font-weight: 500;\n }\n .accordion-icon {\n font-size: 1.5rem;\n }\n .accordion-item.active .accordion-icon {\n transform: rotate(180deg);\n }\n .accordion-content {\n max-height: 0;\n overflow: hidden;\n }\n .accordion-item.active .accordion-content {\n max-height: none;\n }\n .accordion-content-inner {\n font-size: 1.4rem;\n line-height: 1.7;\n color: #555;\n padding-bottom: 2rem;\n }\n .accordion-content-inner p {\n margin: 0 0 1rem 0;\n }\n .accordion-content-inner ul {\n margin: 0 0 1rem 0;\n padding-left: 2rem;\n }\n .accordion-content-inner h3 {\n font-size: 1.4rem;\n font-weight: 600;\n color: #333;\n margin: 1.5rem 0 0.5rem 0;\n }\n .specs-table {\n width: 100%;\n border-collapse: collapse;\n }\n .specs-table th,\n .specs-table td {\n border: 1px solid #ddd;\n padding: 0.75rem 1rem;\n font-size: 1.4rem;\n text-align: left;\n }\n .specs-table th {\n background-color: #f5f5f5;\n font-weight: 600;\n color: #333;\n }\n\u003c\/style\u003e\n\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003c!-- Section 1: Product Overview --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Pyro-Chem GV-200 Mechanical Gas Valve (Part No. 551049) is a heavy-duty, 2-inch shutoff component engineered for the Kitchen Knight II and Monarch fire suppression systems. As the largest standard unit in the GV series, it serves as the primary fuel interruptor for main gas headers. By immediately terminating the fuel supply to large-scale appliance lines upon system discharge, the GV-200 provides critical source isolation, effectively starving the fire of thermal energy and preventing catastrophic re-ignition.\u003c\/p\u003e\n \u003cp\u003eOptimized for industrial food processing and high-volume commercial kitchens, the GV-200 features a spring-loaded fail-closed design. It is held open by a stainless steel cable connected to the system control head; upon activation, the tension is released and a heavy-duty internal spring slams the valve disc into the seat. This purely mechanical operation avoids the power-failure trap, ensuring functionality during total building power outages. Its high flow coefficient (Cv) minimizes pressure drop, ensuring that industrial-scale charbroilers and fryer batteries receive consistent gas volume without performance fluctuations.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 2: Technical Specifications --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eFeature\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eManufacturer\u003c\/td\u003e\n \u003ctd\u003ePyro-Chem (A Johnson Controls Brand)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePart Number\u003c\/td\u003e\n \u003ctd\u003e551049 (Model GV-200)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePipe Diameter\u003c\/td\u003e\n \u003ctd\u003e2-inch NPT\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eValve Type\u003c\/td\u003e\n \u003ctd\u003eMechanical \/ Spring-Loaded\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHousing Material\u003c\/td\u003e\n \u003ctd\u003eCorrosion-Resistant Bronze \/ Cast Iron\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePressure Rating\u003c\/td\u003e\n \u003ctd\u003e5.0 PSI (Standard Gas Service)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSystem Interface\u003c\/td\u003e\n \u003ctd\u003eMechanical Cable Actuation\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 3: Installation \u0026 Safety --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eInstallation \u0026amp; Safety\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe GV-200 must be installed by a licensed fire suppression technician in accordance with the Kitchen Knight II or Monarch design manual and applicable local gas codes. Due to its robust 2-inch casting, the valve is significantly heavier than smaller GV-series units. The 2-inch NPT piping must be securely supported with heavy-duty hangers on both sides of the valve to prevent mechanical stress on the manifold connections during the high-torque trip sequence.\u003c\/p\u003e\n \u003cp\u003eThe mechanical actuation cable must be routed without kinks or sharp bends, and cable tension must be set to factory specifications to ensure the spring holds the valve fully open during normal operation. After installation, the technician must verify full valve travel by performing a manual trip test and confirming positive gas shutoff before the system is placed in service. Once tripped, the GV-200 requires a manual reset by a certified professional, serving as a secondary safety protocol to prevent unburned gas from being re-introduced into the hazard zone before a full fire audit and inspection have been completed.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 4: FAQ --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eWhat is the strategic benefit of a 2-inch valve over multiple smaller valves?\u003c\/h3\u003e\n \u003cp\u003eUtilizing a single GV-200 on the main gas header simplifies the manifold architecture and reduces the number of potential failure points. It ensures that every appliance under a massive 20-foot or 30-foot hood is shut off simultaneously, which is more reliable than coordinating multiple individual appliance drops.\u003c\/p\u003e\n\n \u003ch3\u003eHow does the GV-200 mitigate pilot-light drop in large lines?\u003c\/h3\u003e\n \u003cp\u003eIn high-volume headers, maintaining gas volume is essential. The GV-200 is engineered with a high flow coefficient (Cv), meaning it provides minimal resistance. This prevents the pressure fluctuations that cause pilot lights to go out during peak cooking hours, ensuring industrial source isolation without sacrificing appliance performance.\u003c\/p\u003e\n\n \u003ch3\u003eDoes this valve require a specific reset procedure?\u003c\/h3\u003e\n \u003cp\u003eYes. Once tripped, the GV-200 requires a manual reset by a certified professional. This serves as a secondary safety protocol, preventing unburned gas from being accidentally re-introduced into the hazard zone before a full fire audit and safety inspection have been completed.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n const headers = document.querySelectorAll('.accordion-header');\n headers.forEach(header =\u003e {\n header.addEventListener('click', function() {\n this.parentElement.classList.toggle('active');\n });\n });\n});\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Pyro-Chem GV-200 Mechanical Gas Valve\",\n \"description\": \"Heavy-duty 2-inch NPT spring-loaded mechanical gas shutoff valve for Pyro-Chem Kitchen Knight II and Monarch fire suppression systems. Corrosion-resistant bronze and cast iron construction with high flow coefficient (Cv). Rated to 5.0 PSI. Mechanical cable actuation with fail-closed design for full functionality during power failures.\",\n \"sku\": \"551049\",\n \"mpn\": \"551049\",\n \"brand\": {\n \"@type\": \"Brand\",\n \"name\": \"Pyro-Chem\"\n },\n \"manufacturer\": {\n \"@type\": \"Organization\",\n \"name\": \"Pyro-Chem (A Johnson Controls Brand)\"\n },\n \"category\": \"Fire Suppression Equipment\",\n \"additionalProperty\": [\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Part Number\",\n \"value\": \"551049 (Model GV-200)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Pipe Diameter\",\n \"value\": \"2-inch NPT\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Valve Type\",\n \"value\": \"Mechanical \/ Spring-Loaded\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Housing Material\",\n \"value\": \"Corrosion-Resistant Bronze \/ Cast Iron\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Pressure Rating\",\n \"value\": \"5.0 PSI (Standard Gas Service)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"System Interface\",\n \"value\": \"Mechanical Cable Actuation\"\n }\n ]\n}\n\u003c\/script\u003e\n\n\n\u003c\/body\u003e","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":45948700688549,"sku":"551049","price":484.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pyrochem-default-title-pyro-chem-gv-150-gas-valve-550596-33373555294373_3bf1e61f-8d0a-45a5-95a0-e172b2733cc2.webp?v=1771286615"},{"product_id":"pyrochem-gv-150gas-valve-550596","title":"Pyro-Chem GV-150 Gas Valve - 550596","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003ePyro-Chem GV-150 Automatic Gas Shutoff Valve | 1-1\/2\" Pipe | Part No. 550596\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section { max-width: 100%; margin: 2rem 0; font-family: Arial, sans-serif; color: #333; }\n .accordion-item { border-bottom: 1px solid #ddd; }\n .accordion-header { display: flex; justify-content: space-between; padding: 2rem 0; cursor: pointer; background: none; border: none; width: 100%; text-align: left; color: #333; }\n .accordion-header:hover, .accordion-header:focus { color: #333; background: none; outline: none; }\n .accordion-title { font-size: 1.5rem; font-weight: 500; }\n .accordion-icon { font-size: 1.5rem; }\n .accordion-item.active .accordion-icon { transform: rotate(180deg); }\n .accordion-content { max-height: 0; overflow: hidden; }\n .accordion-item.active .accordion-content { max-height: none; }\n .accordion-content-inner { font-size: 1.4rem; line-height: 1.7; color: #555; padding-bottom: 2rem; }\n .accordion-content-inner p { margin: 0 0 1rem 0; }\n .accordion-content-inner ul { margin: 0 0 1rem 0; padding-left: 2rem; }\n .accordion-content-inner h3 { font-size: 1.4rem; font-weight: 600; color: #333; margin: 1.5rem 0 0.5rem 0; }\n .specs-table { width: 100%; border-collapse: collapse; }\n .specs-table th, .specs-table td { border: 1px solid #ddd; padding: 0.75rem 1rem; font-size: 1.4rem; text-align: left; }\n .specs-table th { background-color: #f5f5f5; font-weight: 600; color: #333; }\n\u003c\/style\u003e\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Pyro-Chem GV-150 (P\/N 550596) is a factory-approved automatic gas shutoff valve for 1-1\/2-inch pipe, designed for Pyro-Chem Kitchen Knight II kitchen fire suppression systems protecting large commercial kitchen configurations. The 1-1\/2-inch pipe size of the GV-150 is typical in high-volume commercial cooking operations — large restaurant chains, cafeteria kitchens, and institutional food service facilities where multiple high-BTU cooking appliances share a larger-capacity gas supply manifold. During system discharge, the GV-150 automatically closes the gas supply valve for range and manifold configurations, eliminating the fuel source and preventing reignition per NFPA 96 requirements.\u003c\/p\u003e\n \u003cp\u003eAs the second-largest model in the Pyro-Chem GV series (with the GV-200 for 2-inch pipe being the largest), the GV-150 is specified for the highest-capacity single-zone Kitchen Knight II installations. The gas shut off valve for range applications at this pipe size requires reliable, full-port closure under the higher gas volumes present in 1-1\/2-inch supply lines — and the GV-150's factory-listed design ensures that performance consistently. The gas safety shut off valve function of the GV-150 is critical in large commercial kitchens where a system discharge must simultaneously shut off gas to multiple high-BTU appliances.\u003c\/p\u003e\n \u003cp\u003eThe complete Pyro-Chem GV series — GV-75 (550593) through GV-200 (551049) — is available through authorized pyro chem distributors with full pyro chem price list pricing. The pyro chem kitchen knight manual provides detailed gas valve installation and testing specifications for all GV series models. For large commercial kitchen fire suppression system projects requiring the commercial kitchen emergency gas shut off valve capability at 1-1\/2-inch pipe, the GV-150 is the correct specification per the Pyro-Chem Kitchen Knight II design documentation.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003ePyro-Chem (A Johnson Controls Brand)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e550596\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eGV-150\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePipe Size\u003c\/td\u003e\n\u003ctd\u003e1-1\/2 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eAutomatic gas shutoff during system discharge\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCompatible Systems\u003c\/td\u003e\n\u003ctd\u003ePyro-Chem Kitchen Knight II\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL Listed, NFPA 96 compliant, OEM Original\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eInstallation \u0026amp; Compliance (NFPA 96)\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eInstall the GV-150 in the 1-1\/2-inch gas supply line upstream of all protected cooking appliances per NFPA 96 and applicable local gas codes. Mark the gas safety valve shut off location with gas shut off signage. Connect the actuation wiring to the Kitchen Knight II control head per the pyro chem kitchen knight manual. In high-volume commercial kitchen configurations, verify the gas safety shut off valve is accessible for manual reset after system discharge — staff must be able to reset the gas valve after a discharge and system recharge before returning cooking operations to service. Test the GV-150 gas auto shut off valve at every semi-annual NFPA 17A and NFPA 96 inspection and document in the fire suppression system inspection record.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eCan the GV-150 handle both natural gas and LP gas service?\u003c\/h3\u003e\n \u003cp\u003eVerify natural gas and LP gas compatibility in the pyro chem fire suppression system documentation for the GV-150. Gas valve listings can vary by fuel type — confirm the correct approval for your facility's gas service type with authorized pyro chem supply distributors before installation. Gas cooker shut off valve and gas dryer shut off valve ratings are also gas-type specific and should be verified accordingly.\u003c\/p\u003e\n \u003ch3\u003eWhat if the existing gas line is already 1-1\/2 inch but runs to individual 1-inch appliance drops?\u003c\/h3\u003e\n \u003cp\u003eInstall the GV-150 on the 1-1\/2-inch main supply line to protect all appliances simultaneously. This is the preferred NFPA 96 configuration for multi-appliance Kitchen Knight II systems — a single gas shut off valve automatic on the main supply is more reliable than multiple smaller valves on individual appliance drops. Consult the pyro chem kitchen knight manual for the approved gas valve placement strategy for your specific system design.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n document.querySelectorAll('.accordion-header').forEach(h =\u003e h.addEventListener('click', function() { this.parentElement.classList.toggle('active'); }));\n});\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Pyro-Chem GV-150 Automatic Gas Shutoff Valve | 1-1\/2\\\" Pipe | Part No. 550596\",\n \"description\": \"UL Listed Pyro-Chem GV-150 automatic gas shutoff valve for 1-1\/2-inch pipe. For large commercial kitchen Kitchen Knight II installations. Shuts off gas during system discharge per NFPA 96. Manual reset after discharge.\",\n \"sku\": \"550596\", \"mpn\": \"GV-150\",\n \"brand\": { \"@type\": \"Brand\", \"name\": \"Pyro-Chem\" },\n \"manufacturer\": { \"@type\": \"Organization\", \"name\": \"Pyro-Chem (A Johnson Controls Brand)\" },\n \"category\": \"Fire Suppression Equipment\"\n}\n\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":45948702326949,"sku":"550596","price":435.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pyrochem-default-title-pyro-chem-gv-150-gas-valve-550596-33373555294373_6c493028-99af-45b3-a48e-0be6e6f1a38b.webp?v=1771286614"},{"product_id":"pyrochem-gv-125-gas-valve-550595","title":"Pyro-Chem GV-125 Gas Valve 550595","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003ePyro-Chem GV-125 Automatic Gas Shutoff Valve | 1-1\/4\" Pipe | Part No. 550595\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section { max-width: 100%; margin: 2rem 0; font-family: Arial, sans-serif; color: #333; }\n .accordion-item { border-bottom: 1px solid #ddd; }\n .accordion-header { display: flex; justify-content: space-between; padding: 2rem 0; cursor: pointer; background: none; border: none; width: 100%; text-align: left; color: #333; }\n .accordion-header:hover, .accordion-header:focus { color: #333; background: none; outline: none; }\n .accordion-title { font-size: 1.5rem; font-weight: 500; }\n .accordion-icon { font-size: 1.5rem; }\n .accordion-item.active .accordion-icon { transform: rotate(180deg); }\n .accordion-content { max-height: 0; overflow: hidden; }\n .accordion-item.active .accordion-content { max-height: none; }\n .accordion-content-inner { font-size: 1.4rem; line-height: 1.7; color: #555; padding-bottom: 2rem; }\n .accordion-content-inner p { margin: 0 0 1rem 0; }\n .accordion-content-inner ul { margin: 0 0 1rem 0; padding-left: 2rem; }\n .accordion-content-inner h3 { font-size: 1.4rem; font-weight: 600; color: #333; margin: 1.5rem 0 0.5rem 0; }\n .specs-table { width: 100%; border-collapse: collapse; }\n .specs-table th, .specs-table td { border: 1px solid #ddd; padding: 0.75rem 1rem; font-size: 1.4rem; text-align: left; }\n .specs-table th { background-color: #f5f5f5; font-weight: 600; color: #333; }\n\u003c\/style\u003e\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Pyro-Chem GV-125 (P\/N 550595) is a factory-approved automatic gas shutoff valve for 1-1\/4-inch pipe, designed for Pyro-Chem Kitchen Knight II kitchen fire suppression systems. The GV-125 automatically closes the gas supply line during a system discharge, preventing reignition of protected cooking equipment after the wet chemical agent has suppressed the initial grease fire. As a gas safety shut off valve, the GV-125 is required by NFPA 96 for all commercial kitchen fire suppression systems protecting gas-fueled appliances where the supply pipe is 1-1\/4-inch.\u003c\/p\u003e\n \u003cp\u003eThe 1-1\/4-inch pipe size of the GV-125 makes it the correct gas range shut off valve for medium-capacity commercial kitchen gas supply configurations — typically serving larger fryers, ranges, or multi-appliance manifolds where gas flow demand exceeds what a 1-inch line can support. Selecting the correct GV model for the pipe size is critical: an undersized gas valve creates a restriction that reduces appliance performance during normal operation, while an oversized valve may not properly seal under low-pressure conditions. Always match the commercial kitchen gas shut off valve to the actual pipe size using the pyro chem kitchen knight manual specifications.\u003c\/p\u003e\n \u003cp\u003eThe GV-125 is part of the complete Pyro-Chem GV series spanning 3\/4-inch through 2-inch pipe sizes, all available through authorized pyro chem distributors. The pyro chem price list and pyro chem supply channels provide complete ordering information for the entire GV series. The gas shut off valve for range and commercial kitchen emergency gas shut off valve applications covered by the GV series make it one of the highest-specification components in any Pyro-Chem kitchen fire suppression system installation.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003ePyro-Chem (A Johnson Controls Brand)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e550595\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eGV-125\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePipe Size\u003c\/td\u003e\n\u003ctd\u003e1-1\/4 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eAutomatic gas shutoff during system discharge\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCompatible Systems\u003c\/td\u003e\n\u003ctd\u003ePyro-Chem Kitchen Knight II\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL Listed, NFPA 96 compliant, OEM Original\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eInstallation \u0026amp; Compliance (NFPA 96)\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eInstall the GV-125 in the 1-1\/4-inch gas supply line upstream of the protected cooking appliances per NFPA 96 and local gas code requirements. Identify the gas safety valve shut off location with gas shut off signage per applicable codes. Connect the actuation wiring to the Pyro-Chem Kitchen Knight II control head per the pyro chem kitchen knight manual. Test the gas auto shut off valve at every semi-annual NFPA 17A and NFPA 96 inspection by triggering a simulated discharge and confirming the GV-125 closes fully and the manual reset functions correctly. A gas safety shut off valve that fails to close or reset is an immediate red-tag deficiency. Document in the fire suppression system inspection record.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eIs the GV-125 compatible with natural gas and LP gas systems?\u003c\/h3\u003e\n \u003cp\u003eVerify the GV-125 gas safety shut off valve gas type compatibility in the pyro chem fire suppression system documentation. Gas valve approvals can differ between natural gas and LP gas service — confirm the correct approval for your specific gas type before installation. Authorized pyro chem distributors can confirm gas type compatibility for all GV series models.\u003c\/p\u003e\n \u003ch3\u003eWhat happens if the gas valve fails to close during a system discharge?\u003c\/h3\u003e\n \u003cp\u003eA gas safety valve shut off failure during a system discharge is a critical NFPA 96 deficiency. The continued gas supply can cause reignition of the cooking equipment grease fire after the wet chemical agent charge has been depleted. If the GV-125 fails to close during testing, it must be replaced immediately with a new OEM valve from authorized pyro chem supply sources before the system is returned to service.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n document.querySelectorAll('.accordion-header').forEach(h =\u003e h.addEventListener('click', function() { this.parentElement.classList.toggle('active'); }));\n});\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Pyro-Chem GV-125 Automatic Gas Shutoff Valve | 1-1\/4\\\" Pipe | Part No. 550595\",\n \"description\": \"UL Listed Pyro-Chem GV-125 automatic gas shutoff valve for 1-1\/4-inch pipe. Shuts off gas supply during Kitchen Knight II system discharge per NFPA 96. Part of complete GV series. Manual reset after discharge.\",\n \"sku\": \"550595\", \"mpn\": \"GV-125\",\n \"brand\": { \"@type\": \"Brand\", \"name\": \"Pyro-Chem\" },\n \"manufacturer\": { \"@type\": \"Organization\", \"name\": \"Pyro-Chem (A Johnson Controls Brand)\" },\n \"category\": \"Fire Suppression Equipment\"\n}\n\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":45948703211685,"sku":"550595","price":375.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pyrochem-default-title-pyro-chem-gv-150-gas-valve-550596-33373555294373_df41dd67-942e-45cd-bb19-908e3c349aa6.webp?v=1776362204"},{"product_id":"pyrochem-gv-100gas-valve-550593","title":"Pyro-Chem GV-100 Gas Valve 550594","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003ePyro-Chem GV-100 Automatic Gas Shutoff Valve | 1\" Pipe | Part No. 550594\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section { max-width: 100%; margin: 2rem 0; font-family: Arial, sans-serif; color: #333; }\n .accordion-item { border-bottom: 1px solid #ddd; }\n .accordion-header { display: flex; justify-content: space-between; padding: 2rem 0; cursor: pointer; background: none; border: none; width: 100%; text-align: left; color: #333; }\n .accordion-header:hover, .accordion-header:focus { color: #333; background: none; outline: none; }\n .accordion-title { font-size: 1.5rem; font-weight: 500; }\n .accordion-icon { font-size: 1.5rem; }\n .accordion-item.active .accordion-icon { transform: rotate(180deg); }\n .accordion-content { max-height: 0; overflow: hidden; }\n .accordion-item.active .accordion-content { max-height: none; }\n .accordion-content-inner { font-size: 1.4rem; line-height: 1.7; color: #555; padding-bottom: 2rem; }\n .accordion-content-inner p { margin: 0 0 1rem 0; }\n .accordion-content-inner ul { margin: 0 0 1rem 0; padding-left: 2rem; }\n .accordion-content-inner h3 { font-size: 1.4rem; font-weight: 600; color: #333; margin: 1.5rem 0 0.5rem 0; }\n .specs-table { width: 100%; border-collapse: collapse; }\n .specs-table th, .specs-table td { border: 1px solid #ddd; padding: 0.75rem 1rem; font-size: 1.4rem; text-align: left; }\n .specs-table th { background-color: #f5f5f5; font-weight: 600; color: #333; }\n\u003c\/style\u003e\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Pyro-Chem GV-100 (P\/N 550594) is a factory-approved automatic gas shutoff valve for 1-inch pipe, designed for use with Pyro-Chem Kitchen Knight II kitchen fire suppression systems. During a system discharge, the GV-100 automatically shuts off the gas supply to protected cooking appliances — eliminating the fuel source that could cause reignition after the wet chemical agent has knocked down the initial grease fire. This coordinated gas shutoff is a mandatory NFPA 96 requirement for commercial kitchen fire suppression systems protecting gas-fueled cooking equipment.\u003c\/p\u003e\n \u003cp\u003eThe Pyro-Chem GV series covers the full range of commercial kitchen gas line sizes. The complete lineup includes the GV-75 (550593) for 3\/4-inch pipe, the GV-100 (550594) for 1-inch pipe, the GV-125 (550595) for 1-1\/4-inch pipe, the GV-150 (550596) for 1-1\/2-inch pipe, and the GV-200 (551049) for 2-inch pipe. All are UL listed and designed specifically for Pyro-Chem kitchen fire suppression system integration — ensuring reliable, coordinated actuation with the Kitchen Knight II control head.\u003c\/p\u003e\n \u003cp\u003eFor fire protection contractors installing or servicing Pyro-Chem kitchen suppression systems, the GV-100 is the most commonly specified gas valve for single-appliance or small multi-appliance configurations where 1-inch gas supply lines are the standard. Authorized pyro chem distributors carry the complete GV series, and pyro chem supply channels provide the full pyro chem price list for all gas valve models. The commercial kitchen emergency gas shut off valve and commercial kitchen gas shut off valve categories in the pyro chem fire suppression system parts catalog describe the complete GV series application specifications.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003ePyro-Chem (A Johnson Controls Brand)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e550594\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eGV-100\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePipe Size\u003c\/td\u003e\n\u003ctd\u003e1 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eAutomatic gas shutoff during system discharge\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCompatible Systems\u003c\/td\u003e\n\u003ctd\u003ePyro-Chem Kitchen Knight II\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL Listed, NFPA 96 compliant, OEM Original\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003ch3\u003ePyro-Chem GV Series — Full Size Range\u003c\/h3\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003ePart No.\u003c\/th\u003e\n\u003cth\u003ePipe Size\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eGV-75\u003c\/td\u003e\n\u003ctd\u003e550593\u003c\/td\u003e\n\u003ctd\u003e3\/4 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eGV-100\u003c\/td\u003e\n\u003ctd\u003e550594\u003c\/td\u003e\n\u003ctd\u003e1 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eGV-125\u003c\/td\u003e\n\u003ctd\u003e550595\u003c\/td\u003e\n\u003ctd\u003e1-1\/4 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eGV-150\u003c\/td\u003e\n\u003ctd\u003e550596\u003c\/td\u003e\n\u003ctd\u003e1-1\/2 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eGV-200\u003c\/td\u003e\n\u003ctd\u003e551049\u003c\/td\u003e\n\u003ctd\u003e2 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eInstallation \u0026amp; Compliance (NFPA 96)\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003ePlacement Requirements\u003c\/h3\u003e\n \u003cp\u003ePer NFPA 96, the gas shutoff valve must be installed in the gas supply line serving the protected cooking equipment, upstream of the appliance connection. The GV-100 must be installed in an accessible location for manual reset after system discharge. Ensure the gas shut off valve for range installation complies with local gas code requirements in addition to NFPA 96. The gas safety shut off valve must be identified with appropriate gas shut off signage per code.\u003c\/p\u003e\n \u003ch3\u003eActuation Connection\u003c\/h3\u003e\n \u003cp\u003eConnect the GV-100 to the Pyro-Chem Kitchen Knight II control head per the pyro chem kitchen knight manual wiring diagram. The gas safety valve shut off actuates via an electrical or mechanical signal from the control head when the suppression system discharges. Verify correct actuation signal polarity and function during system commissioning — the fire suppression gas valve must close completely within the required time after system activation.\u003c\/p\u003e\n \u003ch3\u003eSemi-Annual Inspection\u003c\/h3\u003e\n \u003cp\u003eTest the GV-100 gas auto shut off valve at every semi-annual NFPA 17A and NFPA 96 inspection by triggering a simulated system discharge and confirming the valve closes fully. Verify the manual reset function works correctly after the test. A gas safety shut off valve that fails to close or fails to reset is an immediate red-tag deficiency. Document in the fire suppression system inspection record.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eWhich GV model do I need for my installation?\u003c\/h3\u003e\n \u003cp\u003eSelect the GV model based on the pipe size of the gas supply line serving the protected cooking equipment. The gas range shut off valve size must match the pipe size — never install an undersized valve that requires a reducer fitting, as this can restrict gas flow to the appliance during normal operation. Consult the pyro chem kitchen knight manual and local gas code for the correct gas valve selection for your specific installation.\u003c\/p\u003e\n \u003ch3\u003eCan the GV-100 be used with ANSUL or Range Guard systems?\u003c\/h3\u003e\n \u003cp\u003eThe GV series is specifically designed and listed for Pyro-Chem Kitchen Knight II systems. While the gas safety shut off valve mechanism is similar across brands, each manufacturer's gas valve is calibrated for their system's specific actuation signal. Using a Pyro-Chem GV valve on an ANSUL or Range Guard system is not recommended — use the gas valve specified by the system manufacturer for each installation. Authorized pyro chem distributors can confirm compatibility for your specific system configuration.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n document.querySelectorAll('.accordion-header').forEach(h =\u003e h.addEventListener('click', function() { this.parentElement.classList.toggle('active'); }));\n});\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Pyro-Chem GV-100 Automatic Gas Shutoff Valve | 1\\\" Pipe | Part No. 550594\",\n \"description\": \"UL Listed Pyro-Chem GV-100 automatic gas shutoff valve for 1-inch pipe. Shuts off gas supply during Kitchen Knight II system discharge per NFPA 96. Part of complete GV series (GV-75 through GV-200). Manual reset after discharge.\",\n \"sku\": \"550594\", \"mpn\": \"GV-100\",\n \"brand\": { \"@type\": \"Brand\", \"name\": \"Pyro-Chem\" },\n \"manufacturer\": { \"@type\": \"Organization\", \"name\": \"Pyro-Chem (A Johnson Controls Brand)\" },\n \"category\": \"Fire Suppression Equipment\"\n}\n\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":45948704161957,"sku":"550594","price":345.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pyrochem-default-title-pyro-chem-gv-150-gas-valve-550596-33373555294373_e83f12f5-cfa2-491b-a446-1cca6e64e36d.webp?v=1771286613"},{"product_id":"pyrochem-gv-75-gas-valve-550593","title":"Pyro-Chem GV-75 Gas Valve - 550593","description":"\u003cdiv class=\"product-section\"\u003e\n \u003cstyle\u003e\n .product-section { max-width: 100%; margin: 2rem 0; font-family: Arial, sans-serif; color: #333; }\n .accordion-item { border-bottom: 1px solid #ddd; }\n .accordion-item:first-child { border-top: 1px solid #ddd; }\n .accordion-header { display: flex; justify-content: space-between; padding: 2rem 0; cursor: pointer; background: none; border: none; width: 100%; text-align: left; }\n .accordion-title { font-size: 1.5rem; font-weight: 500; margin: 0; }\n .accordion-icon { font-size: 1.5rem; }\n .accordion-item.active .accordion-icon { transform: rotate(180deg); }\n .accordion-content { max-height: 0; overflow: hidden; }\n .accordion-item.active .accordion-content { max-height: none; padding-bottom: 1.5rem; }\n .accordion-content-inner { font-size: 1.4rem; line-height: 1.7; color: #555; }\n .accordion-content-inner p { margin: 0 0 1.5rem 0; }\n .accordion-content-inner h3 { font-size: 1.4rem; font-weight: 600; margin: 1.5rem 0 1rem 0; }\n .accordion-content-inner ul { margin: 1rem 0 1.5rem 0; padding-left: 2rem; }\n .accordion-content-inner li { margin-bottom: 0.75rem; font-size: 1.4rem; }\n .specs-table { width: 100%; border-collapse: collapse; margin: 1.5rem 0 0 0; }\n .specs-table tr { border-bottom: 1px solid #ddd; }\n .specs-table td { padding: 1rem 0; font-size: 1.4rem; }\n .specs-table td:first-child { font-weight: 600; width: 40%; padding-right: 2rem; }\n \u003c\/style\u003e\n\n \u003cdiv class=\"accordion\"\u003e\n \u003c!-- Product Overview --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eProduct Overview\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Pyro-Chem GV-75 (Part No. 550593) is a factory-approved, heavy-duty automatic gas shutoff valve specifically engineered for integration with the Kitchen Knight II fire suppression system. In the high-stakes environment of a professional kitchen, fire suppression is a multi-stage process. While the wet chemical agent works to knockdown flames, the GV-75 performs the equally critical task of Fuel Source Interruption. By automatically severing the gas supply the moment a discharge is triggered, the GV-75 ensures that ranges, fryers, and broilers cannot continue to feed thermal energy into the hazard zone.\u003c\/p\u003e\n \n \u003cp\u003eConstructed for industrial reliability and designed for seamless mechanical interfacing, the GV-75 is the industry standard for 3\/4-inch gas lines. It is built to withstand high-ambient temperatures and grease-laden atmospheres, providing a robust, fail-safe boundary between your facility's gas main and your cooking equipment. For facility managers, the GV-75 is a mandatory fire code compliance asset.\u003c\/p\u003e\n\n \u003ch3\u003eThe Science of Suppression: Why Fuel Shutoff is Mandatory\u003c\/h3\u003e\n \n \u003cp\u003e\u003cstrong\u003eInterrupting the Fire Triangle\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eFire requires fuel, heat, and oxygen. While Pyro-Chem's wet chemical agents are world-class at removing heat and excluding oxygen, they cannot permanently stop a fire if the fuel source is still active. The GV-75 removes the \"Fuel\" leg of the triangle, ensuring that once the fire is suppressed, it stays suppressed.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eAiding Saponification\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eWet chemical agents react with hot grease to create a soapy foam blanket (saponification). This blanket is most effective when the heat source is removed. If a burner remains active under the foam, the rising heat can break down the chemical barrier, leading to a catastrophic re-flash. The GV-75's rapid response time is critical to maintaining the integrity of the grease fire suppression blanket.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003ePressure Dynamics\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eThe GV-75 is rated for standard low-pressure gas systems (measured in inches of water column). It features a high-flow design that ensures no significant gas pressure drop occurs during normal operation, maintaining the BTU output required for high-volume cooking.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Applications \u0026 Use Cases --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eApplications \u0026amp; Use Cases\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eFull-Service Restaurants:\u003c\/strong\u003e Protecting the main gas manifold for heavy-duty fryer bank fire protection and charbroiler lines.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstitutional Kitchens:\u003c\/strong\u003e Ensuring the safety of hospital and school cooking operations where evacuation times may be longer.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHotel \u0026amp; Resort Kitchens:\u003c\/strong\u003e Providing a fail-safe for 24-hour room service lines and large-scale banquet kitchens.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFood Trucks \u0026amp; Mobile Units:\u003c\/strong\u003e A compact and rugged solution that can handle the vibrations of transport while providing mobile kitchen fire safety compliance.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommercial Bakeries:\u003c\/strong\u003e Protecting large gas-fired ovens where gas volume is high and the BTU rating is substantial.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Technical Specifications --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eTechnical Specifications\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eManufacturer\u003c\/td\u003e\n \u003ctd\u003ePyro-Chem (A Johnson Controls Brand)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eModel Number\u003c\/td\u003e\n \u003ctd\u003eGV-75 (Part No. 550593)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePipe Size\u003c\/td\u003e\n \u003ctd\u003e3\/4\" NPT\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMaximum Pressure\u003c\/td\u003e\n \u003ctd\u003e5.0 PSI (0.35 bar)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompatibility\u003c\/td\u003e\n \u003ctd\u003eKitchen Knight II Suppression System\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCertification\u003c\/td\u003e\n \u003ctd\u003eUL \/ ULC Listed\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eConstruction\u003c\/td\u003e\n \u003ctd\u003eHeavy-Duty Cast Brass\/Bronze Body\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Compliance \u0026 Safety --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eCompliance \u0026amp; Safety\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eTo maintain NFPA 17A compliance and ensure your kitchen passes its semi-annual fire audit, the GV-75 must follow a strict maintenance protocol:\u003c\/p\u003e\n\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eSemi-Annual Functional Test:\u003c\/strong\u003e During the mandatory 6-month system inspection, a certified fire technician must trip the suppression system to verify the GV-75 closes fully and instantly.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCable Tension Verification:\u003c\/strong\u003e For mechanical models, the control cable must be checked for proper tension and lack of fraying. A loose cable can cause a nuisance trip, shutting down the kitchen's gas supply.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSeal Integrity:\u003c\/strong\u003e The internal seals are designed for long-term exposure to natural gas and propane. However, annual visual inspections for leaks around the valve stem are required to maintain a safe cooking environment.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProfessional Installation:\u003c\/strong\u003e Gas valves are critical pressure-containing components. Installation must be performed by a licensed gas fitter in accordance with local codes and automatic gas valve installation standards.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- FAQ --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eFAQ\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003e\u003cstrong\u003eCan I reset the GV-75 myself after a discharge?\u003c\/strong\u003e\u003cbr\u003e\n Technically yes, but legally no. Fire codes require that after a discharge, the entire system including the mechanical gas valve must be inspected and reset by a certified technician. This ensures the equipment is safe to operate and meets kitchen fire code standards.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eIs this valve compatible with other brands like Ansul?\u003c\/strong\u003e\u003cbr\u003e\n The GV-75 is specifically factory-approved for Pyro-Chem systems. While many valves function similarly, mixing brands within a UL-listed fire system can void your warranty and fail an inspection.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eDoes this valve require electricity?\u003c\/strong\u003e\u003cbr\u003e\n No. The GV-75 is a mechanically actuated valve. It relies on a spring-loaded mechanism and a physical cable pull. This is a massive safety advantage, as it will shut off the gas even if the fire has caused a total power outage, ensuring continuous fuel interruption safety.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cscript\u003e\n document.addEventListener('DOMContentLoaded', function() {\n const headers = document.querySelectorAll('.accordion-header');\n headers.forEach(header =\u003e {\n header.addEventListener('click', function() {\n this.parentElement.classList.toggle('active');\n });\n });\n });\n \u003c\/script\u003e\n\n \u003cscript type=\"application\/ld+json\"\u003e\n {\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Pyro-Chem GV-75 Gas Valve - 3\/4 Inch Automatic Shutoff - Part No. 550593\",\n \"description\": \"Factory-approved heavy-duty automatic gas shutoff valve for Kitchen Knight II fire suppression systems in commercial kitchens\",\n \"sku\": \"550593\",\n \"mpn\": \"GV-75\",\n \"brand\": {\n \"@type\": \"Brand\",\n \"name\": \"Pyro-Chem\"\n },\n \"manufacturer\": {\n \"@type\": \"Organization\",\n \"name\": \"Pyro-Chem (A Johnson Controls Brand)\"\n },\n \"additionalProperty\": [\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Pipe Size\",\n \"value\": \"3\/4 inch NPT\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Maximum Pressure\",\n \"value\": \"5.0 PSI (0.35 bar)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Compatibility\",\n \"value\": \"Kitchen Knight II Suppression System\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Certification\",\n \"value\": \"UL \/ ULC Listed\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Construction\",\n \"value\": \"Heavy-Duty Cast Brass\/Bronze Body\"\n }\n ],\n \"category\": \"Fire Suppression Equipment\"\n }\n \u003c\/script\u003e\n\u003c\/div\u003e","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":45948705505445,"sku":"550593","price":309.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pyrochem-default-title-pyro-chem-gv-150-gas-valve-550596-33373555294373_b228eec3-b991-447f-b8cf-b2cdc08f72dd.webp?v=1776362204"},{"product_id":"pyrochem-pull-station-rps-m-551074","title":"Pyro-Chem Pull Station RPS-M - 551074","description":"\u003cdiv class=\"product-section\"\u003e\n \u003cstyle\u003e\n .product-section { max-width: 100%; margin: 2rem 0; font-family: Arial, sans-serif; color: #333; }\n .accordion-item { border-bottom: 1px solid #ddd; }\n .accordion-item:first-child { border-top: 1px solid #ddd; }\n .accordion-header { display: flex; justify-content: space-between; padding: 2rem 0; cursor: pointer; background: none; border: none; width: 100%; text-align: left; }\n .accordion-title { font-size: 1.5rem; font-weight: 500; margin: 0; }\n .accordion-icon { font-size: 1.5rem; }\n .accordion-item.active .accordion-icon { transform: rotate(180deg); }\n .accordion-content { max-height: 0; overflow: hidden; }\n .accordion-item.active .accordion-content { max-height: none; padding-bottom: 1.5rem; }\n .accordion-content-inner { font-size: 1.4rem; line-height: 1.7; color: #555; }\n .accordion-content-inner p { margin: 0 0 1.5rem 0; }\n .accordion-content-inner h3 { font-size: 1.4rem; font-weight: 600; margin: 1.5rem 0 1rem 0; }\n .accordion-content-inner ul { margin: 1rem 0 1.5rem 0; padding-left: 2rem; }\n .accordion-content-inner li { margin-bottom: 0.75rem; font-size: 1.4rem; }\n .specs-table { width: 100%; border-collapse: collapse; margin: 1.5rem 0 0 0; }\n .specs-table tr { border-bottom: 1px solid #ddd; }\n .specs-table td { padding: 1rem 0; font-size: 1.4rem; }\n .specs-table td:first-child { font-weight: 600; width: 40%; padding-right: 2rem; }\n \u003c\/style\u003e\n\n \u003cdiv class=\"accordion\"\u003e\n \u003c!-- Product Overview --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eProduct Overview\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Pyro-Chem RPS-M Pull Station (551074) is a critical manual override component designed for industrial and commercial fire suppression systems. While automatic detection via fusible links is the primary defense, the RPS-M provides the essential human element, allowing personnel to manually trigger the discharge of extinguishing agents the moment a fire is sighted. In the chaotic seconds of a kitchen flare-up, this device acts as the high-visibility bridge between human observation and mechanical suppression.\u003c\/p\u003e\n \n \u003cp\u003eBuilt for durability in high-heat environments, this manual remote pull station uses a rugged mechanical cable linkage. This design ensures the system remains functional even during total power failures, as it does not rely on electrical circuits to actuate the suppression cylinders. It is a staple in professional kitchen fire safety, specifically engineered to integrate seamlessly with the Kitchen Knight II system.\u003c\/p\u003e\n\n \u003ch3\u003eThe Science of Actuation: Mechanical Stroke and Cable Tension\u003c\/h3\u003e\n \n \u003cp\u003e\u003cstrong\u003eMechanical Stroke Calibration\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eThe RPS-M is engineered with a specific throw or mechanical stroke. When the handle is pulled, it retracts the internal stainless steel cable by a precise distance. This displacement is mathematically matched to the control head release sear, ensuring that a single, fluid motion is sufficient to puncture the agent cylinder.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eTension-Loss Logic\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eUnlike electrical switches that make a circuit, the RPS-M works in conjunction with a detection line tensioner. In some configurations, the pull station introduces a tension drop that simulates the melting of a fusible link, triggering a reliable response from the mechanical control head.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eHigh-Stress Component Integrity\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eThe internal pulleys and bushings within the 551074 housing are manufactured to minimize cable friction. This ensures that the force applied by the user is transmitted directly to the suppression system without binding or cable stretch, a vital metric in manual pull station engineering.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Applications \u0026 Use Cases --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eApplications \u0026amp; Use Cases\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommercial Cooking Lines:\u003c\/strong\u003e Providing a manual override for fryer batteries and charbroiler stations.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstitutional Cafeterias:\u003c\/strong\u003e Essential for schools and hospitals where staff require a simple, intuitive fire activation interface.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh-Volume Catering Units:\u003c\/strong\u003e Ensuring safety in fast-paced environments where manual override accessibility is a code requirement.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eModular Kitchen Units:\u003c\/strong\u003e A compact, wall-mounted solution that can handle the vibration and space constraints of mobile food service.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eIndustrial Spray Booths:\u003c\/strong\u003e Acting as a remote trigger for dry chemical systems in hazardous coating environments.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Technical Specifications --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eTechnical Specifications\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eManufacturer\u003c\/td\u003e\n \u003ctd\u003ePyro-Chem (A Johnson Controls Brand)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePart Number\u003c\/td\u003e\n \u003ctd\u003e551074 (Model RPS-M)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eActivation Type\u003c\/td\u003e\n \u003ctd\u003eManual Mechanical Pull\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMounting\u003c\/td\u003e\n \u003ctd\u003eSurface or Wall Mount\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompatibility\u003c\/td\u003e\n \u003ctd\u003eKitchen Knight II \u0026amp; Pyro-Chem Series\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eConnection Type\u003c\/td\u003e\n \u003ctd\u003eMechanical Steel Cable\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHandle Finish\u003c\/td\u003e\n \u003ctd\u003eHigh-Visibility Safety Red\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Compliance \u0026 Safety --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eInstallation \u0026amp; Compliance\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eTo maintain NFPA 17A and NFPA 96 compliance, the installation of the RPS-M must follow strict professional protocols:\u003c\/p\u003e\n\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eEgress Route Placement:\u003c\/strong\u003e Per NFPA guidelines, pull stations should be located along a path of egress, typically between 10 and 20 feet from the protected appliances. This ensures the operator is moving away from the fire during activation.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHeight Requirements:\u003c\/strong\u003e The station must be mounted at a height (usually 42 to 48 inches) that is easily accessible to all staff members, following ADA-compliant fire safety standards.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCable Protection:\u003c\/strong\u003e The mechanical cable must be routed through EMT conduit or specialized corner pulleys to prevent kinking. A bent cable can increase the pull-force required, potentially delaying activation during a kitchen emergency.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSemi-Annual Inspection:\u003c\/strong\u003e During the mandatory 6-month check, a certified fire technician must perform a live pull (with the cylinders disconnected) to ensure the handle moves freely and the cable triggers the control head sear instantly.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- FAQ --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003ch3 class=\"accordion-title\"\u003eFAQ\u003c\/h3\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003e\u003cstrong\u003eDoes the RPS-M 551074 require a battery?\u003c\/strong\u003e\u003cbr\u003e\n No. The RPS-M is a purely mechanical device. It triggers the system by pulling a physical cable, making it immune to electrical outages. This provides a fail-safe manual override that does not require maintenance of electrical circuits.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eCan this pull station be used with Ansul systems?\u003c\/strong\u003e\u003cbr\u003e\n No. While they look similar, the internal stroke and tension requirements of the 551074 are specifically calibrated for Pyro-Chem OEM systems. Using mismatched components can lead to a short-pull failure, which is a major system failure liability.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eWhat is the difference between an M and an E pull station?\u003c\/strong\u003e\u003cbr\u003e\n The M stands for Mechanical, meaning it uses a physical cable. An E (Electric) station uses a contact switch to send a signal to a solenoid. The RPS-M 551074 is the preferred choice for facilities that prioritize non-electric fire safety and reliability.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cscript\u003e\n document.addEventListener('DOMContentLoaded', function() {\n const headers = document.querySelectorAll('.accordion-header');\n headers.forEach(header =\u003e {\n header.addEventListener('click', function() {\n this.parentElement.classList.toggle('active');\n });\n });\n });\n \u003c\/script\u003e\n\n \u003cscript type=\"application\/ld+json\"\u003e\n {\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Pyro-Chem RPS-M Pull Station - Part No. 551074 - Manual Remote Activation\",\n \"description\": \"Critical manual override component for industrial and commercial fire suppression systems with mechanical cable linkage for power-independent reliability\",\n \"sku\": \"551074\",\n \"mpn\": \"RPS-M\",\n \"brand\": {\n \"@type\": \"Brand\",\n \"name\": \"Pyro-Chem\"\n },\n \"manufacturer\": {\n \"@type\": \"Organization\",\n \"name\": \"Pyro-Chem (A Johnson Controls Brand)\"\n },\n \"additionalProperty\": [\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Activation Type\",\n \"value\": \"Manual Mechanical Pull\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Mounting\",\n \"value\": \"Surface or Wall Mount\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Compatibility\",\n \"value\": \"Kitchen Knight II \u0026 Pyro-Chem Series\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Connection Type\",\n \"value\": \"Mechanical Steel Cable\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Handle Finish\",\n \"value\": \"High-Visibility Safety Red\"\n }\n ],\n \"category\": \"Fire Suppression Equipment\"\n }\n \u003c\/script\u003e\n\u003c\/div\u003e","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":45948705898661,"sku":"551074","price":105.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pyrochem-default-title-pyro-chem-pull-station-rps-m-551074-33373567287461_e9cb8bc0-2ff1-47bf-aca0-2bda8fe8a7ed.webp?v=1771286612"},{"product_id":"pyrochem-nmch-dpt-control-head-551204","title":"Pyro-Chem NMCH DPT Control Head - 551204","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003ePyro-Chem NMCH DPT Control Head | Part No. 551204\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section { max-width: 100%; margin: 2rem 0; font-family: Arial, sans-serif; color: #333; }\n .accordion-item { border-bottom: 1px solid #ddd; }\n .accordion-header { display: flex; justify-content: space-between; padding: 2rem 0; cursor: pointer; background: none; border: none; width: 100%; text-align: left; color: #333; }\n .accordion-header:hover, .accordion-header:focus { color: #333; background: none; outline: none; }\n .accordion-title { font-size: 1.5rem; font-weight: 500; }\n .accordion-icon { font-size: 1.5rem; }\n .accordion-item.active .accordion-icon { transform: rotate(180deg); }\n .accordion-content { max-height: 0; overflow: hidden; }\n .accordion-item.active .accordion-content { max-height: none; }\n .accordion-content-inner { font-size: 1.4rem; line-height: 1.7; color: #555; padding-bottom: 2rem; }\n .accordion-content-inner p { margin: 0 0 1rem 0; }\n .accordion-content-inner ul { margin: 0 0 1rem 0; padding-left: 2rem; }\n .accordion-content-inner h3 { font-size: 1.4rem; font-weight: 600; color: #333; margin: 1.5rem 0 0.5rem 0; }\n .specs-table { width: 100%; border-collapse: collapse; }\n .specs-table th, .specs-table td { border: 1px solid #ddd; padding: 0.75rem 1rem; font-size: 1.4rem; text-align: left; }\n .specs-table th { background-color: #f5f5f5; font-weight: 600; color: #333; }\n\u003c\/style\u003e\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Pyro-Chem NMCH DPT Control Head (P\/N 551204) is the manual and automatic release control head for Pyro-Chem Kitchen Knight II and compatible wet chemical fire suppression systems. The \"DPT\" designation refers to its dual-purpose trip capability — allowing the system to be actuated either automatically via the thermal detection line or manually via a remote pull station, making it one of the most versatile control heads in the Pyro-Chem fire suppression system lineup.\u003c\/p\u003e\n \u003cp\u003eThe control head is the mechanical brain of the suppression system. It houses the spring-loaded release mechanism that, when triggered by a fusible link separation or a manual pull station activation, releases the nitrogen actuation pressure to discharge the wet chemical agent through the nozzle manifold. The NMCH3 designation used in some documentation refers to the same platform — technicians searching for nmch3 control head wiring diagram information will find the 551204 is the applicable unit.\u003c\/p\u003e\n \u003cp\u003eFor fire protection contractors servicing Pyro-Chem kitchen fire suppression systems, the 551204 control head is a critical fire suppression supply stocking item. A faulty or worn control head is one of the most common reasons a system fails its semi-annual NFPA 17A and NFPA 96 functional test. Keeping a replacement unit in your fire suppression system parts inventory ensures rapid turnaround for commercial kitchen fire suppression system clients without extended downtime.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003ePyro-Chem (A Johnson Controls Brand)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e551204\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eControl Head Type\u003c\/td\u003e\n\u003ctd\u003eNMCH DPT (Dual-Purpose Trip)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eActuation Type\u003c\/td\u003e\n\u003ctd\u003eManual and automatic (detection line)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003ePyro-Chem Kitchen Knight II and compatible systems\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL 300 Listed, NFPA 17A, NFPA 96\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eInstallation \u0026amp; Compliance (NFPA 17A \u0026amp; 96)\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eSemi-Annual Functional Test\u003c\/h3\u003e\n \u003cp\u003eUnder NFPA 17A and NFPA 96, the control head must be functionally tested at every semi-annual inspection. This involves simulating a detection line trip and verifying the mechanical release mechanism cycles completely. Any sluggishness, binding, or failure to fully cycle is an immediate red-tag deficiency requiring control head replacement. Document the test results on the fire suppression system inspection record.\u003c\/p\u003e\n \u003ch3\u003eCocking and Arming Protocol\u003c\/h3\u003e\n \u003cp\u003eAfter service or testing, the 551204 must be re-cocked and armed per the Pyro-Chem kitchen knight fire suppression system manual. Verify the detection line tension is within specification before arming. An improperly armed control head is the leading cause of nuisance trips and failed actuations in kitchen fire suppression system components.\u003c\/p\u003e\n \u003ch3\u003eMicroswitch and Electrical Connections\u003c\/h3\u003e\n \u003cp\u003eThe 551204 includes internal microswitches for gas valve actuation and alarm signaling. Verify all electrical connections are secure and the wiring matches the nmch3 control head wiring diagram for your installation. Loose or corroded connections are a common source of false alarms and system communication failures.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eIs the 551204 compatible with the Pyro-Chem PCL-350 system?\u003c\/h3\u003e\n \u003cp\u003eThe 551204 NMCH DPT control head is specifically listed for Pyro-Chem Kitchen Knight II systems. Compatibility with other Pyro-Chem platforms including the PCL-350 should be verified against the pyro chem kitchen knight manual and system as-built drawings before installation. Using an unlisted control head voids the UL 300 certification of the system.\u003c\/p\u003e\n \u003ch3\u003eWhat does \"DPT\" mean on the control head?\u003c\/h3\u003e\n \u003cp\u003eDPT stands for Dual-Purpose Trip — meaning the control head can be actuated by either the automatic thermal detection line (fusible link separation) or by a manual remote pull station. This dual actuation capability is required for most commercial kitchen fire suppression system installations under NFPA 96.\u003c\/p\u003e\n \u003ch3\u003eCan I reset the control head after a discharge without replacing components?\u003c\/h3\u003e\n \u003cp\u003eAfter a full system discharge, the control head must be inspected for internal component damage before re-arming. The Pyro-Chem pyro chem fire suppression system manual provides the reset procedure. Any component showing damage, corrosion, or wear after a discharge should be replaced with OEM fire suppression system parts before returning the system to service.\u003c\/p\u003e\n \u003c\/div\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n document.querySelectorAll('.accordion-header').forEach(h =\u003e h.addEventListener('click', function() { this.parentElement.classList.toggle('active'); }));\n});\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Pyro-Chem NMCH DPT Control Head | Part No. 551204\",\n \"description\": \"UL 300 Listed dual-purpose trip (DPT) control head for Pyro-Chem Kitchen Knight II wet chemical fire suppression systems. Manual and automatic actuation via detection line or remote pull station. Includes internal microswitches for gas valve and alarm signaling. Semi-annual functional test required per NFPA 17A and NFPA 96. Refer to NMCH3 wiring diagram for electrical connections. Pyro-Chem OEM original.\",\n \"sku\": \"551204\", \"mpn\": \"551204\",\n \"brand\": { \"@type\": \"Brand\", \"name\": \"Pyro-Chem\" },\n \"manufacturer\": { \"@type\": \"Organization\", \"name\": \"Pyro-Chem (A Johnson Controls Brand)\" },\n \"category\": \"Fire Suppression Equipment\"\n}\n\u003c\/script\u003e\n\n\u003c\/body\u003e","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":45960579514533,"sku":"551204","price":649.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pyrochem-default-title-pyro-chem-nmch-control-head-551203-33278405968037_f35b4376-c679-4c56-b482-f2231ac94919.webp?v=1771286559"},{"product_id":"pyro-chem-co2-actuation-cartridge-pilot-16-gram-single-item-551059","title":"Pyro-Chem CO2 Actuation Cartridge Pilot, 16 Gram, Single Item - 551059","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003ePyro-Chem 16g CO2 Actuation Cartridge | Single Unit | Part No. 551059-P001\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section {\n max-width: 100%;\n margin: 2rem 0;\n font-family: Arial, sans-serif;\n color: #333;\n }\n .accordion-item {\n border-bottom: 1px solid #ddd;\n }\n .accordion-header {\n display: flex;\n justify-content: space-between;\n padding: 2rem 0;\n cursor: pointer;\n background: none;\n border: none;\n width: 100%;\n text-align: left;\n color: #333;\n }\n .accordion-header:hover,\n .accordion-header:focus {\n color: #333;\n background: none;\n outline: none;\n }\n .accordion-title {\n font-size: 1.5rem;\n font-weight: 500;\n }\n .accordion-icon {\n font-size: 1.5rem;\n }\n .accordion-item.active .accordion-icon {\n transform: rotate(180deg);\n }\n .accordion-content {\n max-height: 0;\n overflow: hidden;\n }\n .accordion-item.active .accordion-content {\n max-height: none;\n }\n .accordion-content-inner {\n font-size: 1.4rem;\n line-height: 1.7;\n color: #555;\n padding-bottom: 2rem;\n }\n .accordion-content-inner p {\n margin: 0 0 1rem 0;\n }\n .accordion-content-inner ul {\n margin: 0 0 1rem 0;\n padding-left: 2rem;\n }\n .accordion-content-inner h3 {\n font-size: 1.4rem;\n font-weight: 600;\n color: #333;\n margin: 1.5rem 0 0.5rem 0;\n }\n .specs-table {\n width: 100%;\n border-collapse: collapse;\n }\n .specs-table th,\n .specs-table td {\n border: 1px solid #ddd;\n padding: 0.75rem 1rem;\n font-size: 1.4rem;\n text-align: left;\n }\n .specs-table th {\n background-color: #f5f5f5;\n font-weight: 600;\n color: #333;\n }\n\u003c\/style\u003e\n\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003c!-- Section 1: Product Overview --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Pyro-Chem 551059-P001 is the single-unit 16g CO2 actuation cartridge used in Kitchen Knight II, Monarch, and Attendant suppression systems. While bulk packs are optimized for full-facility overhauls, the 551059-P001 is the strategic choice for precision field service and emergency go-bag inventory. This individual 16-gram cartridge provides the stored kinetic energy required to actuate a single agent cylinder. Upon a manual pull or a thermal link melting, the system's firing pin punctures the hermetic seal, releasing high-pressure gas to drive the fire suppressant through the discharge manifold.\u003c\/p\u003e\n \u003cp\u003eFor facility managers overseeing small-scale kitchen infrastructure such as small cafes, food trucks, or dedicated server closets, this individual format ensures exact inventory control. It allows for post-incident system restoration following a localized hazard suppression event or a functional test without the overhead of surplus stock. By maintaining a single 551059-P001 on-site, technicians can perform a spot replacement, ensuring the facility's fire defense remains active with the exact OEM tolerances required for a full-volume discharge.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 2: Technical Specifications --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eFeature\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eManufacturer\u003c\/td\u003e\n \u003ctd\u003ePyro-Chem (A Johnson Controls Brand)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePart Number\u003c\/td\u003e\n \u003ctd\u003e551059-P001 (Single Item)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eAgent Type\u003c\/td\u003e\n \u003ctd\u003eCarbon Dioxide (CO2)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCharge Weight\u003c\/td\u003e\n \u003ctd\u003e16 Grams\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompatibility\u003c\/td\u003e\n \u003ctd\u003eKitchen Knight II and Monarch Systems\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eActuation Method\u003c\/td\u003e\n \u003ctd\u003eFiring Pin Puncture Interface\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eWeight Tolerance\u003c\/td\u003e\n \u003ctd\u003eReplace if more than 1\/4 oz below stamped gross weight\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCertifications\u003c\/td\u003e\n \u003ctd\u003eUL Listed, FM Approved\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 3: Installation \u0026 Compliance --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eInstallation \u0026amp; Compliance\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe 551059-P001 must be installed by a certified fire suppression technician in accordance with the Kitchen Knight II or Monarch system design manual and NFPA 17A. Before installation, the control head must be safety-pinned to prevent accidental firing pin actuation during service. The cartridge should be threaded into the receiver using the full seating sequence; under-tightening can allow gas to bypass the receiver rather than flowing into the agent cylinder.\u003c\/p\u003e\n \u003cp\u003eIt is mandated best practice to also replace the Receiver O-Ring (P\/N 055531) whenever a new cartridge is installed. This ensures the pneumatic interface between the cartridge and the control head remains gas-tight under the high-pressure surge of a discharge. Per NFPA 17A, the cartridge must be removed and weighed against its stamped gross weight every six months. If the cartridge has lost more than 1\/4 oz (approximately 7 grams), it has suffered a seal compromise and must be replaced immediately.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 4: FAQ --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eHow do I verify the integrity of a single 551059-P001 cartridge?\u003c\/h3\u003e\n \u003cp\u003ePrecision is verified through mass. Every individual cartridge must undergo a gross weight verification during its semi-annual inspection. If a field-weight check reveals a loss of more than 1\/4 oz (approximately 7 grams), the cartridge has suffered a seal compromise and must be replaced immediately to ensure the system has enough pressure to actuate the tank.\u003c\/p\u003e\n\n \u003ch3\u003eIs this individual cartridge compatible with an Ansul R-102 system?\u003c\/h3\u003e\n \u003cp\u003eNo. While both manufacturers utilize CO2 actuation, they are calibrated to different hydraulic requirements. The Ansul R-102 line often utilizes specific gram weights mathematically matched to their specific cylinder volumes. Using a 16g Pyro-Chem cartridge in an Ansul-listed manifold is a significant safety violation and can lead to an incomplete discharge.\u003c\/p\u003e\n\n \u003ch3\u003eDoes the 551059-P001 include the necessary receiver seal?\u003c\/h3\u003e\n \u003cp\u003eNo. The individual cartridge is the pressure vessel only. It is mandated best practice to also replace the Receiver O-Ring (P\/N 055531) whenever a new cartridge is installed. This ensures the pneumatic interface between the cartridge and the control head remains gas-tight under the high-pressure surge of a discharge.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n const headers = document.querySelectorAll('.accordion-header');\n headers.forEach(header =\u003e {\n header.addEventListener('click', function() {\n this.parentElement.classList.toggle('active');\n });\n });\n});\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Pyro-Chem 16g CO2 Actuation Cartridge | Single Unit\",\n \"description\": \"UL Listed and FM Approved single-unit 16-gram CO2 actuation cartridge for Pyro-Chem Kitchen Knight II and Monarch fire suppression systems. Firing pin puncture interface. Semi-annual gross weight verification required per NFPA 17A; replace if more than 1\/4 oz below stamped weight. Receiver O-Ring P\/N 055531 sold separately. For precision field service and go-bag inventory.\",\n \"sku\": \"551059-P001\",\n \"mpn\": \"551059-P001\",\n \"brand\": {\n \"@type\": \"Brand\",\n \"name\": \"Pyro-Chem\"\n },\n \"manufacturer\": {\n \"@type\": \"Organization\",\n \"name\": \"Pyro-Chem (A Johnson Controls Brand)\"\n },\n \"category\": \"Fire Suppression Equipment\",\n \"additionalProperty\": [\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Part Number\",\n \"value\": \"551059-P001 (Single Item)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Agent Type\",\n \"value\": \"Carbon Dioxide (CO2)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Charge Weight\",\n \"value\": \"16 Grams\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Compatibility\",\n \"value\": \"Kitchen Knight II and Monarch Systems\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Actuation Method\",\n \"value\": \"Firing Pin Puncture Interface\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Weight Tolerance\",\n \"value\": \"Replace if more than 1\/4 oz below stamped gross weight\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Certifications\",\n \"value\": \"UL Listed, FM Approved\"\n }\n ]\n}\n\u003c\/script\u003e\n\n\n\u003c\/body\u003e","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":47421005791397,"sku":null,"price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/Pyro-Chem_CO2_Actuation_Cartridge_Pilot_16_Gram_Single_Item_72e7a9df-b980-4490-bc73-db8e2dba0f84.webp?v=1771286469"},{"product_id":"pyro-chem-co2-actuation-cartridge-pilot-16-gram-6-pack-551059","title":"Pyro-Chem CO2 Actuation Cartridge Pilot, 16 Gram, 6 Pack - 551059","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003ePyro-Chem 16g CO2 Actuation Cartridge | 6-Pack | Part No. 551059-P006\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section {\n max-width: 100%;\n margin: 2rem 0;\n font-family: Arial, sans-serif;\n color: #333;\n }\n .accordion-item {\n border-bottom: 1px solid #ddd;\n }\n .accordion-header {\n display: flex;\n justify-content: space-between;\n padding: 2rem 0;\n cursor: pointer;\n background: none;\n border: none;\n width: 100%;\n text-align: left;\n color: #333;\n }\n .accordion-header:hover,\n .accordion-header:focus {\n color: #333;\n background: none;\n outline: none;\n }\n .accordion-title {\n font-size: 1.5rem;\n font-weight: 500;\n }\n .accordion-icon {\n font-size: 1.5rem;\n }\n .accordion-item.active .accordion-icon {\n transform: rotate(180deg);\n }\n .accordion-content {\n max-height: 0;\n overflow: hidden;\n }\n .accordion-item.active .accordion-content {\n max-height: none;\n }\n .accordion-content-inner {\n font-size: 1.4rem;\n line-height: 1.7;\n color: #555;\n padding-bottom: 2rem;\n }\n .accordion-content-inner p {\n margin: 0 0 1rem 0;\n }\n .accordion-content-inner ul {\n margin: 0 0 1rem 0;\n padding-left: 2rem;\n }\n .accordion-content-inner h3 {\n font-size: 1.4rem;\n font-weight: 600;\n color: #333;\n margin: 1.5rem 0 0.5rem 0;\n }\n .specs-table {\n width: 100%;\n border-collapse: collapse;\n }\n .specs-table th,\n .specs-table td {\n border: 1px solid #ddd;\n padding: 0.75rem 1rem;\n font-size: 1.4rem;\n text-align: left;\n }\n .specs-table th {\n background-color: #f5f5f5;\n font-weight: 600;\n color: #333;\n }\n\u003c\/style\u003e\n\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003c!-- Section 1: Product Overview --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Pyro-Chem 16g CO2 Actuation Cartridge (551059-P006) is the mission-critical pneumatic spark of the Kitchen Knight II, Monarch, and ProTex II fire suppression systems. In the mechanical hierarchy of a pre-engineered safety network, the actuation cartridge serves as the primary source of fire system kinetic energy. While the detection line identifies the thermal hazard, the 551059 cartridge provides the physical force required to transition the system from standby to active discharge.\u003c\/p\u003e\n \u003cp\u003eIn the event of a fire, a firing pin within the Mechanical Control Head (MCH) punctures the cartridge's seal, instantly releasing 16 grams of high-pressure carbon dioxide. This gas is channeled into the agent cylinder, providing the necessary head pressure to propel the wet or dry chemical suppressant through the discharge manifold. Utilizing the genuine 551059-P006 6-pack ensures your inventory is stocked with the exact tolerances required to maintain UL 300 actuation hardware compliance across a facility fleet.\u003c\/p\u003e\n\n \u003ch3\u003ePrecision Mass Calibration\u003c\/h3\u003e\n \u003cp\u003eThe 16-gram CO2 charge is mathematically matched to the internal volume and head-space of the Pyro-Chem A530 wet chemical or Monarch dry chemical tanks. The pressure generated by the expansion must be sufficient to overcome the break-away force of the cylinder valve. If the mass is less than 16 grams due to a slow leak, the system may only achieve a partial discharge, leaving the hazard uncontained.\u003c\/p\u003e\n\n \u003ch3\u003eHermetic Seal and Puncture Geometry\u003c\/h3\u003e\n \u003cp\u003eThe 551059 is built with a reinforced, hermetic seal cartridge cap engineered to resist creep or microscopic leakage over years of sedentary storage. The metal thickness of the puncture zone is calibrated to the specific kinetic force of the firing pin, ensuring a clean, unobstructed aperture every time the system is activated.\u003c\/p\u003e\n\n \u003ch3\u003eThermal Stability in Extreme Plenums\u003c\/h3\u003e\n \u003cp\u003eKitchen exhaust hoods experience extreme thermal cycling. The 16-gram charge is manufactured to maintain internal pressure stability even when exposed to high ambient temperatures, ensuring the CO2 remains in its proper phase until the moment of actuation.\u003c\/p\u003e\n\n \u003ch3\u003e6-Pack Inventory Optimization\u003c\/h3\u003e\n \u003cp\u003eFor service companies managing multiple hoods, the 6-pack (P006) is the logistical standard. It provides a cost-effective way to stock service vehicles, ensuring a technician can perform multiple annual cartridge replacements in a single facility walkthrough without returning to the warehouse.\u003c\/p\u003e\n\n \u003ch3\u003eProTex II Compatibility\u003c\/h3\u003e\n \u003cp\u003eThe 551059 is also a listed component for ProTex II systems. This allows contractors managing mixed-brand facilities to stock a single actuation SKU, simplifying procurement and reducing the likelihood of having the wrong part on-site.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 2: Technical Specifications --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eFeature\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eManufacturer\u003c\/td\u003e\n \u003ctd\u003ePyro-Chem (A Johnson Controls Brand)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePart Number\u003c\/td\u003e\n \u003ctd\u003e551059 (6-Pack: 551059-P006)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eAgent Type\u003c\/td\u003e\n \u003ctd\u003eCarbon Dioxide (CO2)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCharge Weight\u003c\/td\u003e\n \u003ctd\u003e16 Grams\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n \u003ctd\u003eKitchen Knight II, Monarch, ProTex II\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eControl Head Fit\u003c\/td\u003e\n \u003ctd\u003eMCH Cartridge Receiver \/ PRM Actuator\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eWeight Tolerance\u003c\/td\u003e\n \u003ctd\u003eMust not deviate more than 1\/4 oz from stamped weight\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompliance\u003c\/td\u003e\n \u003ctd\u003eUL Listed, NFPA 17A Weight Audit Required\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 3: Maintenance \u0026 Compliance --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eMaintenance \u0026amp; Compliance\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eThe Weight-Verification Audit\u003c\/h3\u003e\n \u003cp\u003eDuring every semi-annual inspection, the technician must remove the cartridge from the MCH receiver and weigh it on a calibrated scale against the gross weight stamped on the casing. If the cartridge shows a loss of more than 1\/4 oz, it must be replaced immediately. This NFPA 17A weight audit is the primary defense against systems that appear armed but lack the pressure to discharge.\u003c\/p\u003e\n\n \u003ch3\u003eMandatory Annual Replacement\u003c\/h3\u003e\n \u003cp\u003eWhile CO2 is stable, most local AHJs recommend annual cartridge replacement as a preventative measure against microscopic seal degradation that a standard field scale might not detect.\u003c\/p\u003e\n\n \u003ch3\u003eCartridge Receiver O-Ring Interface\u003c\/h3\u003e\n \u003cp\u003eWhenever a cartridge is removed, the receiver O-ring (P\/N 055531) must be inspected. If the O-ring is flattened, the actuation gas will leak into the control head housing instead of the agent tank. Always apply a light coating of Visilox V-711 silicone lubricant to the O-ring during each service.\u003c\/p\u003e\n\n \u003ch3\u003eThe Safety Pin Protocol\u003c\/h3\u003e\n \u003cp\u003eTechnicians must ensure the control head is safety-pinned before installing or removing the 551059. Accidental firing pin actuation during service is a leading cause of expensive, non-fire-related agent discharges.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 4: FAQ --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eCan I use a 16g CO2 cartridge meant for a bicycle tire inflator?\u003c\/h3\u003e\n \u003cp\u003eAbsolutely not. While the threads may look similar, fire suppression cartridges are listed components with specific seal thicknesses and purity levels. Using a non-fire-rated cartridge is a major code violation and will likely result in a failed system discharge.\u003c\/p\u003e\n\n \u003ch3\u003eWhat is the difference between the 16g and 12g cartridges?\u003c\/h3\u003e\n \u003cp\u003eVolume and pressure. The 551059 is the 16g standard for larger tanks. Using a 12g cartridge in a system designed for a 16g charge will result in insufficient pressure to fully discharge the agent, leaving the hazard unprotected.\u003c\/p\u003e\n\n \u003ch3\u003eDoes the cartridge have an expiration date?\u003c\/h3\u003e\n \u003cp\u003eThere is no traditional expiration date, but the semi-annual weighing requirement manages the lifecycle. If the cartridge stays within the 1\/4 oz weight tolerance, it is viable, though most service contracts mandate annual replacement for liability reasons.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n const headers = document.querySelectorAll('.accordion-header');\n headers.forEach(header =\u003e {\n header.addEventListener('click', function() {\n this.parentElement.classList.toggle('active');\n });\n });\n});\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Pyro-Chem 16g CO2 Actuation Cartridge | 6-Pack\",\n \"description\": \"UL Listed 16-gram CO2 actuation cartridge for Pyro-Chem Kitchen Knight II, Monarch, and ProTex II fire suppression systems. Fits MCH cartridge receiver and PRM actuator. Hermetic seal with firing-pin-calibrated puncture zone. Semi-annual weight audit required per NFPA 17A; replace if more than 1\/4 oz below stamped weight. Sold in 6-pack (551059-P006).\",\n \"sku\": \"551059-P006\",\n \"mpn\": \"551059-P006\",\n \"brand\": {\n \"@type\": \"Brand\",\n \"name\": \"Pyro-Chem\"\n },\n \"manufacturer\": {\n \"@type\": \"Organization\",\n \"name\": \"Pyro-Chem (A Johnson Controls Brand)\"\n },\n \"category\": \"Fire Suppression Equipment\",\n \"additionalProperty\": [\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Part Number\",\n \"value\": \"551059 (6-Pack: 551059-P006)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Agent Type\",\n \"value\": \"Carbon Dioxide (CO2)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Charge Weight\",\n \"value\": \"16 Grams\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"System Compatibility\",\n \"value\": \"Kitchen Knight II, Monarch, ProTex II\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Control Head Fit\",\n \"value\": \"MCH Cartridge Receiver \/ PRM Actuator\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Weight Tolerance\",\n \"value\": \"Must not deviate more than 1\/4 oz from stamped weight\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Compliance\",\n \"value\": \"UL Listed, NFPA 17A Weight Audit Required\"\n }\n ]\n}\n\u003c\/script\u003e\n\n\n\u003c\/body\u003e","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":47421045407909,"sku":null,"price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/Pyro-Chem_CO2_Actuation_Cartridge_Pilot_16_Gram_6_Pack_-_551059_-_1_06241526-146d-4d2e-8290-3a58d30f6639.webp?v=1771286468"},{"product_id":"ansul-pyro-chem-terminal-detector-kit-scissors-style-ss-435546","title":"Ansul \/ Pyro-Chem Terminal Detector Kit (Scissors Style, SS) - 435546","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003eAnsul \/ Pyro-Chem Terminal Detector Kit | Part No. 435546\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section {\n max-width: 100%;\n margin: 2rem 0;\n font-family: Arial, sans-serif;\n color: #333;\n }\n .accordion-item {\n border-bottom: 1px solid #ddd;\n }\n .accordion-header {\n display: flex;\n justify-content: space-between;\n padding: 2rem 0;\n cursor: pointer;\n background: none;\n border: none;\n width: 100%;\n text-align: left;\n color: #333;\n }\n .accordion-header:hover,\n .accordion-header:focus {\n color: #333;\n background: none;\n outline: none;\n }\n .accordion-title {\n font-size: 1.5rem;\n font-weight: 500;\n }\n .accordion-icon {\n font-size: 1.5rem;\n }\n .accordion-item.active .accordion-icon {\n transform: rotate(180deg);\n }\n .accordion-content {\n max-height: 0;\n overflow: hidden;\n }\n .accordion-item.active .accordion-content {\n max-height: none;\n }\n .accordion-content-inner {\n font-size: 1.4rem;\n line-height: 1.7;\n color: #555;\n padding-bottom: 2rem;\n }\n .accordion-content-inner p {\n margin: 0 0 1rem 0;\n }\n .accordion-content-inner ul {\n margin: 0 0 1rem 0;\n padding-left: 2rem;\n }\n .accordion-content-inner h3 {\n font-size: 1.4rem;\n font-weight: 600;\n color: #333;\n margin: 1.5rem 0 0.5rem 0;\n }\n .specs-table {\n width: 100%;\n border-collapse: collapse;\n }\n .specs-table th,\n .specs-table td {\n border: 1px solid #ddd;\n padding: 0.75rem 1rem;\n font-size: 1.4rem;\n text-align: left;\n }\n .specs-table th {\n background-color: #f5f5f5;\n font-weight: 600;\n color: #333;\n }\n\u003c\/style\u003e\n\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003c!-- Section 1: Product Overview --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Ansul \/ Pyro-Chem Terminal Detector Kit (435546) is the mission-critical sensory anchor for Ansul R-102 and Kitchen Knight II fire suppression systems. In the complex architecture of a detection network, the terminal detector serves as the definitive mechanical endpoint. While series detectors act as pass-through guides along the hood plenum, the 435546 is the final unit in the chain, furthest from the control head, responsible for maintaining the structural integrity of the 1\/16-inch stainless steel monitoring cable.\u003c\/p\u003e\n \u003cp\u003eUtilizing a scissors-style linkage manufactured from high-grade stainless steel, the 435546 provides the precise kinetic release required to actuate the system the moment a fire plume compromises a thermal link. By standardizing on the genuine Ansul \/ Pyro-Chem terminal detector, facility managers ensure their parts inventory possesses the mechanical integrity to overcome years of grease accumulation, providing a zero-failure trigger for their suppression infrastructure.\u003c\/p\u003e\n\n \u003ch3\u003eScissor Linkage Leverage\u003c\/h3\u003e\n \u003cp\u003eThe scissors-style linkage design utilizes mechanical leverage to maintain cable tension while minimizing the force required for separation. When a fire occurs and the fusible link melts, the scissor arms pivot outward, instantly converting the static potential energy of the tensioned cable into kinetic movement that trips the control head.\u003c\/p\u003e\n\n \u003ch3\u003eStainless Steel Metallurgy\u003c\/h3\u003e\n \u003cp\u003eThe 435546 is a stainless steel terminal bracket designed for aggressive atmospheres. In environments defined by aerosolized salts and caustic cleaning agents, the stainless steel construction ensures the scissor pivot remains responsive, preventing the seized-link failure that can occur with inferior hardware.\u003c\/p\u003e\n\n \u003ch3\u003eTotal-Line Verification via Terminal Placement\u003c\/h3\u003e\n \u003cp\u003eBy placing the included 24916 test link at the terminal position, a technician can verify the integrity of the entire detection run. If the system trips correctly when the terminal link is cut, it proves the cable moves freely through every corner pulley in the series. This also confirms that the control head's spring force is sufficient to overcome the cumulative friction of the entire conduit run.\u003c\/p\u003e\n\n \u003ch3\u003eZero-Discharge Verification\u003c\/h3\u003e\n \u003cp\u003eThe inclusion of the 24916 test link allows for a full mechanical trip without destroying a live fusible link. This provides a zero-discharge verification pathway, ensuring the facility stays in full NFPA 17A compliance without unnecessary inventory depletion.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 2: Technical Specifications --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eFeature\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eManufacturer\u003c\/td\u003e\n \u003ctd\u003eAnsul \/ Pyro-Chem\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePart Number\u003c\/td\u003e\n \u003ctd\u003e435546\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eStyle\u003c\/td\u003e\n \u003ctd\u003eScissors-Style Linkage\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMaterial\u003c\/td\u003e\n \u003ctd\u003eStainless Steel\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n \u003ctd\u003eAnsul R-102 and Kitchen Knight II Series\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eIncluded Components\u003c\/td\u003e\n \u003ctd\u003eBracket, Linkage, and 24916 Test Link\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eConduit Interface\u003c\/td\u003e\n \u003ctd\u003e1\/2 inch EMT Connectors\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eFusible Link\u003c\/td\u003e\n \u003ctd\u003eSold Separately (Temperature-Rated per Appliance)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompliance\u003c\/td\u003e\n \u003ctd\u003eUL Listed, NFPA 17A\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 3: Installation \u0026 Compliance --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eInstallation \u0026amp; Compliance\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eAlignment Verification\u003c\/h3\u003e\n \u003cp\u003eEnsure the 435546 is mounted so the scissor linkage is directly centered over the protected hazard. Any side-loading on the cable can increase friction and delay actuation.\u003c\/p\u003e\n\n \u003ch3\u003eThe 6-Month Trip Log\u003c\/h3\u003e\n \u003cp\u003eDuring semi-annual inspections, always use the included test link at the terminal detector. Record the system's reaction time; any delay indicates a need for a tension-release diagnostic or conduit cleaning.\u003c\/p\u003e\n\n \u003ch3\u003eS-Hook Integrity\u003c\/h3\u003e\n \u003cp\u003eVerify that the S-hooks used to connect the linkage to the cable are not bent. These are vital elements of the detection chain and must be free of deformation to ensure a clean tension release.\u003c\/p\u003e\n\n \u003ch3\u003eFusible Link Selection\u003c\/h3\u003e\n \u003cp\u003eThe 435546 is the housing only. You must order the appropriate temperature-rated fusible link (such as 212°F, 280°F, or 360°F) separately to match the specific appliance below the bracket.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 4: FAQ --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eWhy is the 435546 \"Scissors\" style preferred over the older \"Hook\" style?\u003c\/h3\u003e\n \u003cp\u003eThe scissor linkage provides a cleaner drop when the link melts. In high-grease environments, older designs could occasionally hang if grease acted as an adhesive. The mechanical pivot of the scissors-style linkage forces a separation, making it far more reliable in real-world conditions.\u003c\/p\u003e\n\n \u003ch3\u003eIs the 435546 compatible with non-Ansul detection brackets?\u003c\/h3\u003e\n \u003cp\u003eNo. While it may physically fit other conduit, it is specifically UL Listed for R-102 detection hardware. Mixing manufacturers' detection hardware is a code violation and can lead to improper tension release.\u003c\/p\u003e\n\n \u003ch3\u003eDo I need to replace the scissor linkage after a fire event?\u003c\/h3\u003e\n \u003cp\u003eYes. While the bracket is stainless steel, the intense heat of a fire plume can anneal or weaken the metal. To maintain the UL 300 safety listing, the 435546 kit assembly should be replaced following any actual discharge.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n const headers = document.querySelectorAll('.accordion-header');\n headers.forEach(header =\u003e {\n header.addEventListener('click', function() {\n this.parentElement.classList.toggle('active');\n });\n });\n});\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Ansul \/ Pyro-Chem Terminal Detector Kit | 435546\",\n \"description\": \"UL Listed stainless steel scissors-style terminal detector kit for Ansul R-102 and Pyro-Chem Kitchen Knight II fire suppression systems. Includes bracket, scissors linkage, and 24916 test link. 1\/2 inch EMT conduit interface. Final detection cable anchor for full-line signal path verification. Fusible link sold separately per appliance temperature rating. NFPA 17A compliant.\",\n \"sku\": \"435546\",\n \"mpn\": \"435546\",\n \"brand\": {\n \"@type\": \"Brand\",\n \"name\": \"Ansul\"\n },\n \"manufacturer\": {\n \"@type\": \"Organization\",\n \"name\": \"Ansul \/ Pyro-Chem (A Johnson Controls Brand)\"\n },\n \"category\": \"Fire Suppression Equipment\",\n \"additionalProperty\": [\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Part Number\",\n \"value\": \"435546\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Style\",\n \"value\": \"Scissors-Style Linkage\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Material\",\n \"value\": \"Stainless Steel\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"System Compatibility\",\n \"value\": \"Ansul R-102 and Kitchen Knight II Series\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Included Components\",\n \"value\": \"Bracket, Linkage, and 24916 Test Link\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Conduit Interface\",\n \"value\": \"1\/2 inch EMT Connectors\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Compliance\",\n \"value\": \"UL Listed, NFPA 17A\"\n }\n ]\n}\n\u003c\/script\u003e\n\n\n\u003c\/body\u003e","brand":"Ansul","offers":[{"title":"Default Title","offer_id":47424388137125,"sku":null,"price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/AnsulPyro-ChemTerminalDetectorKit_ScissorsStyle_SS_-435546_5acf859a-50b2-4f8d-a621-abad1494f547.webp?v=1771286461"},{"product_id":"pyro-chem-gv-300-gas-valve-550186","title":"Pyro-Chem GV-300 Gas Valve - 550186","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003ePyro-Chem GV-300 Mechanical Gas Valve | Part No. 550186 | 3\" NPT Mainline Series\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section {\n max-width: 100%;\n margin: 2rem 0;\n font-family: Arial, sans-serif;\n color: #333;\n }\n .accordion-item {\n border-bottom: 1px solid #ddd;\n }\n .accordion-header {\n display: flex;\n justify-content: space-between;\n padding: 2rem 0;\n cursor: pointer;\n background: none;\n border: none;\n width: 100%;\n text-align: left;\n color: #333;\n }\n .accordion-header:hover,\n .accordion-header:focus {\n color: #333;\n background: none;\n outline: none;\n }\n .accordion-title {\n font-size: 1.5rem;\n font-weight: 500;\n }\n .accordion-icon {\n font-size: 1.5rem;\n }\n .accordion-item.active .accordion-icon {\n transform: rotate(180deg);\n }\n .accordion-content {\n max-height: 0;\n overflow: hidden;\n }\n .accordion-item.active .accordion-content {\n max-height: none;\n }\n .accordion-content-inner {\n font-size: 1.4rem;\n line-height: 1.7;\n color: #555;\n padding-bottom: 2rem;\n }\n .accordion-content-inner p {\n margin: 0 0 1rem 0;\n }\n .accordion-content-inner ul {\n margin: 0 0 1rem 0;\n padding-left: 2rem;\n }\n .accordion-content-inner h3 {\n font-size: 1.4rem;\n font-weight: 600;\n color: #333;\n margin: 1.5rem 0 0.5rem 0;\n }\n .specs-table {\n width: 100%;\n border-collapse: collapse;\n }\n .specs-table th,\n .specs-table td {\n border: 1px solid #ddd;\n padding: 0.75rem 1rem;\n font-size: 1.4rem;\n text-align: left;\n }\n .specs-table th {\n background-color: #f5f5f5;\n font-weight: 600;\n color: #333;\n }\n\u003c\/style\u003e\n\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003c!-- Section 1: Product Overview --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Pyro-Chem GV-300 Mechanical Gas Valve (550186) is a mission-critical safety component engineered specifically for the Kitchen Knight II and Monarch industrial fire suppression systems. In large-scale culinary and industrial environments, the GV-300 serves as the definitive mainline gas sentinel. While discharge nozzles handle flame knockdown, the GV-300 performs the equally vital task of fuel supply isolation. This 3-inch NPT Normally Open (NO) valve automatically terminates the fuel supply to an entire battery of gas-fired appliances the moment the fire system is actuated.\u003c\/p\u003e\n \u003cp\u003eUnlike electrical solenoid valves that are susceptible to power surges or localized electrical failures during a fire, the 550186 operates on an immutable mechanical principle. It is the definitive fail-safe for UL 300 and NFPA 96 compliance, ensuring that a fire is starved of its energy source before it can re-ignite or migrate into the exhaust plenum. For contractors and facility directors, the GV-300 represents the pinnacle of industrial-grade gas security, providing a ruggedized, power-independent solution for high-volume mainline manifolds.\u003c\/p\u003e\n\n \u003ch3\u003eTension-Release Actuation Logic\u003c\/h3\u003e\n \u003cp\u003eThe GV-300 is integrated into the detection network via a 1\/16\" stainless steel cable. During the ready state, the Pyro-Chem Control Head maintains constant detection line tension, holding the valve's internal gate in the open position. The moment a thermal fusible link melts or a manual pull station is triggered, the control head releases this tension.\u003c\/p\u003e\n\n \u003ch3\u003eSpring-Loaded Kinetic Closure\u003c\/h3\u003e\n \u003cp\u003eOnce the cable tension is removed, a heavy-duty internal compression spring instantly expands, snapping the valve's internal plug into the seated position within milliseconds. This ensures gas flow is stopped almost simultaneously with the discharge of the suppression agent, preventing the fuel-feeding of an active kitchen fire.\u003c\/p\u003e\n\n \u003ch3\u003eManual Reset Safety Protocol\u003c\/h3\u003e\n \u003cp\u003eOnce the valve has tripped, it cannot be reopened by simply re-tensioning the cable. A technician must physically reset the valve at the body, ensuring a professional has inspected the line for leaks or damage before fuel is reintroduced to the facility.\u003c\/p\u003e\n\n \u003ch3\u003eHigh-Flow 3-Inch Bore Design\u003c\/h3\u003e\n \u003cp\u003eThe internal porting of the 3-inch NPT valve is machined to maximize flow with minimal pressure drop, keeping the pressure loss well within the tolerances required by NFPA 54 fuel gas code for high-BTU culinary batteries. The massive bore allows a single valve to secure an entire kitchen's main gas supply.\u003c\/p\u003e\n\n \u003ch3\u003ePower-Independent Reliability\u003c\/h3\u003e\n \u003cp\u003eIn an emergency, electrical circuits are often the first to fail. The GV-300's purely mechanical operation means it functions perfectly during a total building blackout, ensuring gas is secured when it matters most.\u003c\/p\u003e\n\n \u003ch3\u003eKitchen Knight II System Purity\u003c\/h3\u003e\n \u003cp\u003eUsing a non-listed gas valve can void the UL 300 listing of the entire suppression system. The GV-300 is specifically listed for use with the Kitchen Knight II and Monarch systems, ensuring the system's response time and mechanical force are perfectly synchronized with the agent discharge.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 2: Technical Specifications --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eFeature\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eManufacturer\u003c\/td\u003e\n \u003ctd\u003ePyro-Chem (A Johnson Controls Brand)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePart Number\u003c\/td\u003e\n \u003ctd\u003e550186\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eModel Designation\u003c\/td\u003e\n \u003ctd\u003eGV-300\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePipe Size\u003c\/td\u003e\n \u003ctd\u003e3-Inch NPT Threads\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eActuation Type\u003c\/td\u003e\n \u003ctd\u003eMechanical (Tension-Release)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOperating Mode\u003c\/td\u003e\n \u003ctd\u003eNormally Open (NO) \/ Spring-Loaded Close\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eBody Material\u003c\/td\u003e\n \u003ctd\u003eHeavy-Duty Cast Bronze \/ Iron\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eReset Requirement\u003c\/td\u003e\n \u003ctd\u003eManual Local Reset (Technician Required)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n \u003ctd\u003eKitchen Knight II \/ Monarch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompliance\u003c\/td\u003e\n \u003ctd\u003eNFPA 54 Fuel Gas Code, UL Listed\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 3: Installation \u0026 Compliance --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eInstallation \u0026amp; Compliance\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eThe 6-Month Functional Trip Test\u003c\/h3\u003e\n \u003cp\u003eEvery six months, a certified technician must trip the fire system to verify that the GV-300 snaps shut. It is not enough to verify cable tension; the technician must confirm that the gas flow is 100% obstructed to satisfy NFPA 17A requirements.\u003c\/p\u003e\n\n \u003ch3\u003eCorner Pulley and Conduit Integrity\u003c\/h3\u003e\n \u003cp\u003eThe 1\/16\" stainless steel cable must move freely through every corner pulley in the run. Any binding or grease-clogged conduit can delay the valve's closing time. Technicians must inspect the entire cable run for signs of wear or fraying during each audit.\u003c\/p\u003e\n\n \u003ch3\u003eUpstream\/Downstream Piping Alignment\u003c\/h3\u003e\n \u003cp\u003eWhen installing a 3-inch NPT gas valve, ensure the pipe is properly supported with heavy-duty hangers. The weight of 3-inch steel pipe can put significant stress on the valve body, potentially leading to internal galling if the valve is not perfectly aligned.\u003c\/p\u003e\n\n \u003ch3\u003eReset Procedure Awareness\u003c\/h3\u003e\n \u003cp\u003eFacility personnel should be trained that if gas suddenly stops during a non-fire event, the GV-300 will require a manual local reset. This prevents confusion and unnecessary service calls to the gas utility company.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 4: FAQ --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eCan I use the GV-300 for an Ansul or Buckeye system?\u003c\/h3\u003e\n \u003cp\u003eNo. While the mechanical principle is similar, the Pyro-Chem GV-300 is specifically listed for use within the Pyro-Chem safety envelope. Mixing manufacturers can lead to improper cable-pull distances, which may result in a valve that only partially closes during a fire.\u003c\/p\u003e\n\n \u003ch3\u003eDoes this valve work with Propane (LPG) and Natural Gas?\u003c\/h3\u003e\n \u003cp\u003eYes. The GV-300 is compatible with both natural gas and liquid propane vapor. However, it is not intended for liquid-phase propane. Ensure your gas density is within the calibrated flow limits of the valve.\u003c\/p\u003e\n\n \u003ch3\u003eWhat is the difference between this and a solenoid gas valve?\u003c\/h3\u003e\n \u003cp\u003eA solenoid valve uses an electromagnet and requires constant electricity. The GV-300 is purely mechanical; it uses the tension of a wire rope to stay open and the force of an internal spring to close, making it immune to power outages.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n const headers = document.querySelectorAll('.accordion-header');\n headers.forEach(header =\u003e {\n header.addEventListener('click', function() {\n this.parentElement.classList.toggle('active');\n });\n });\n});\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Pyro-Chem GV-300 Mechanical Gas Valve | 3\\\" NPT Mainline\",\n \"description\": \"UL Listed heavy-duty cast bronze or iron normally open mechanical gas valve for Pyro-Chem Kitchen Knight II and Monarch fire suppression systems. 3-inch NPT tension-release actuation via 1\/16 inch stainless steel cable. Spring-loaded millisecond closure. Manual local reset required after actuation. NFPA 54 compliant. Compatible with natural gas and liquid propane vapor.\",\n \"sku\": \"550186\",\n \"mpn\": \"550186\",\n \"brand\": {\n \"@type\": \"Brand\",\n \"name\": \"Pyro-Chem\"\n },\n \"manufacturer\": {\n \"@type\": \"Organization\",\n \"name\": \"Pyro-Chem (A Johnson Controls Brand)\"\n },\n \"category\": \"Fire Suppression Equipment\",\n \"additionalProperty\": [\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Part Number\",\n \"value\": \"550186\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Model Designation\",\n \"value\": \"GV-300\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Pipe Size\",\n \"value\": \"3-Inch NPT Threads\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Actuation Type\",\n \"value\": \"Mechanical (Tension-Release)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Operating Mode\",\n \"value\": \"Normally Open (NO) \/ Spring-Loaded Close\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Body Material\",\n \"value\": \"Heavy-Duty Cast Bronze \/ Iron\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Reset Requirement\",\n \"value\": \"Manual Local Reset (Technician Required)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"System Compatibility\",\n \"value\": \"Kitchen Knight II \/ Monarch\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Compliance\",\n \"value\": \"NFPA 54 Fuel Gas Code, UL Listed\"\n }\n ]\n}\n\u003c\/script\u003e\n\n\n\u003c\/body\u003e","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":47425421836453,"sku":null,"price":1199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/Pyro-ChemGV-300GasValve-550186_294b9ed0-1c76-4613-8b48-6572d35916e7.webp?v=1771286452"},{"product_id":"pyro-chem-double-action-pull-station-551166","title":"Pyro-Chem Double Action Pull Station - 551166","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003ePyro-Chem RPS-E2 Double Action Pull Station | Part No. 551166 | Electrical Series\u003c\/title\u003e\n\u003cstyle\u003e\n .product-section {\n max-width: 100%;\n margin: 2rem 0;\n font-family: Arial, sans-serif;\n color: #333;\n }\n .accordion-item {\n border-bottom: 1px solid #ddd;\n }\n .accordion-header {\n display: flex;\n justify-content: space-between;\n padding: 2rem 0;\n cursor: pointer;\n background: none;\n border: none;\n width: 100%;\n text-align: left;\n color: #333;\n }\n .accordion-header:hover,\n .accordion-header:focus {\n color: #333;\n background: none;\n outline: none;\n }\n .accordion-title {\n font-size: 1.5rem;\n font-weight: 500;\n }\n .accordion-icon {\n font-size: 1.5rem;\n }\n .accordion-item.active .accordion-icon {\n transform: rotate(180deg);\n }\n .accordion-content {\n max-height: 0;\n overflow: hidden;\n }\n .accordion-item.active .accordion-content {\n max-height: none;\n }\n .accordion-content-inner {\n font-size: 1.4rem;\n line-height: 1.7;\n color: #555;\n padding-bottom: 2rem;\n }\n .accordion-content-inner p {\n margin: 0 0 1rem 0;\n }\n .accordion-content-inner ul {\n margin: 0 0 1rem 0;\n padding-left: 2rem;\n }\n .accordion-content-inner h3 {\n font-size: 1.4rem;\n font-weight: 600;\n color: #333;\n margin: 1.5rem 0 0.5rem 0;\n }\n .specs-table {\n width: 100%;\n border-collapse: collapse;\n }\n .specs-table th,\n .specs-table td {\n border: 1px solid #ddd;\n padding: 0.75rem 1rem;\n font-size: 1.4rem;\n text-align: left;\n }\n .specs-table th {\n background-color: #f5f5f5;\n font-weight: 600;\n color: #333;\n }\n\u003c\/style\u003e\n\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n \u003c!-- Section 1: Product Overview --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cp\u003eThe Pyro-Chem Double Action Pull Station (551166), designated as Model RPS-E2, is a mission-critical manual command station engineered for the Kitchen Knight II and Monarch industrial fire suppression systems. In the sophisticated architecture of fire safety, the RPS-E2 serves as the human fail-safe. While automatic detection systems rely on thermal fusible links or electronic sensors, the RPS-E2 allows on-site personnel to initiate a full suppression discharge instantly from a safe distance, such as a designated point of egress.\u003c\/p\u003e\n \u003cp\u003eDesigned for high-traffic and high-vibration industrial environments, the 551166 utilizes a double-action mechanical gate. By requiring two distinct physical movements to actuate, the RPS-E2 virtually eliminates the risk of accidental triggering. For facility managers, the RPS-E2 is more than a pull station; it is a rugged manual override interface designed to protect against costly system downtime.\u003c\/p\u003e\n\n \u003ch3\u003eTactile Intentionality\u003c\/h3\u003e\n \u003cp\u003eIn a standard single-action station, a single snag of a cleaning cloth can trigger a discharge. The RPS-E2 requires push-and-pull mechanics, a push in of the front plate followed by a pull down of the handle. This mechanical sequence ensures that actuation is a result of deliberate human intent, providing essential nuisance trip mitigation.\u003c\/p\u003e\n\n \u003ch3\u003eDie-Cast Structural Integrity\u003c\/h3\u003e\n \u003cp\u003eUnlike consumer-grade plastic units, the 551166 is constructed from a heavy-duty, corrosion-resistant die-cast metal alloy. This is critical in environments where aerosolized grease and caustic cleaning chemicals can degrade plastic over time. The metal housing ensures the hinges and switch mechanisms remain viable for the entire service life of the system.\u003c\/p\u003e\n\n \u003ch3\u003eHigh-Visibility Fire Red Finishing\u003c\/h3\u003e\n \u003cp\u003eThe unit is finished with a high-impact, oven-cured fire red powder coat. This ensures the station remains visible through thick smoke or during power failures, guiding personnel to the manual release point when seconds count.\u003c\/p\u003e\n\n \u003ch3\u003eSPST Switch Architecture\u003c\/h3\u003e\n \u003cp\u003eThe unit features a high-reliability single pole single throw (SPST) switch. When the handle is pulled, the switch completes the circuit, sending a low-voltage signal to the Electric Control Head (ECH3) or the system's main control panel.\u003c\/p\u003e\n\n \u003ch3\u003eSupervised Circuitry Dynamics\u003c\/h3\u003e\n \u003cp\u003eIn a professional installation, the RPS-E2 is typically wired with an end-of-line resistor (EOLR). The control panel constantly monitors the circuit for continuity. If the wiring is cut or the station is tampered with, the resistance changes and the panel triggers a trouble signal, ensuring the system does not sit in a dead state.\u003c\/p\u003e\n\n \u003ch3\u003eECH Coordination\u003c\/h3\u003e\n \u003cp\u003eUpon receiving the signal from the 551166, the Electric Control Head triggers a pneumatic actuation cartridge. This pulse travels through the manifold to the agent cylinders, initiating a total discharge. This electrical setup is ideal for complex layouts where routing mechanical cables around multiple corners would be impossible.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 2: Applications \u0026 Use Cases --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eApplications \u0026amp; Use Cases\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh-Volume Commercial Kitchens:\u003c\/strong\u003e Positioned near exits to serve as the chef's final fail-safe for the Kitchen Knight II system.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eIndustrial Paint Spray Booths:\u003c\/strong\u003e The electrical nature of the RPS-E2 allows it to be placed outside the hazardous vapor zone of a Monarch system.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHazardous Material Storage:\u003c\/strong\u003e Providing a rugged, vibration-resistant manual trigger for chemical lockers where accidental release would be catastrophic.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstitutional Facilities:\u003c\/strong\u003e Protecting massive cooking lines where manual activation points must be networked across large distances.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eRetrofit Modernization:\u003c\/strong\u003e Upgrading older mechanical pull systems to electrical supervision to meet modern building codes.\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 3: Technical Specifications --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ctable class=\"specs-table\"\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eFeature\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eManufacturer\u003c\/td\u003e\n \u003ctd\u003ePyro-Chem (A Johnson Controls Brand)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePart Number\u003c\/td\u003e\n \u003ctd\u003e551166 (Model RPS-E2)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eAction Type\u003c\/td\u003e\n \u003ctd\u003eDual-Action Pull Station\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSwitch Configuration\u003c\/td\u003e\n \u003ctd\u003eSingle Pole Single Throw (SPST)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eConstruction\u003c\/td\u003e\n \u003ctd\u003eHeavy-Duty Die-Cast Metal\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eFinish\u003c\/td\u003e\n \u003ctd\u003eFire Red Powder Coat\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompatibility\u003c\/td\u003e\n \u003ctd\u003eKitchen Knight II \/ Monarch Series\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompliance\u003c\/td\u003e\n \u003ctd\u003eUL Listed, FM Approved, CSFM Listed\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 4: Installation \u0026 Compliance --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eInstallation \u0026amp; Compliance\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eThe 6-Month Functional Audit\u003c\/h3\u003e\n \u003cp\u003eEvery six months, a technician must perform a functional test. Using a silent test mode, the technician ensures the SPST switch sends the correct signal without firing the agent cylinders.\u003c\/p\u003e\n\n \u003ch3\u003ePath of Egress Accessibility\u003c\/h3\u003e\n \u003cp\u003eNFPA standards mandate that the 551166 be unobstructed and located along the natural path of exit. If a remodel has moved the exit, the path of egress accessibility must be re-verified.\u003c\/p\u003e\n\n \u003ch3\u003eTamper Seal Verification\u003c\/h3\u003e\n \u003cp\u003eMost jurisdictions require a visual tamper indicator (break-tie). During maintenance, technicians replace these seals to provide the Fire Marshal with proof that the system remains untampered.\u003c\/p\u003e\n\n \u003ch3\u003eADA Mounting Heights\u003c\/h3\u003e\n \u003cp\u003eTo ensure accessibility, the RPS-E2 should be mounted between 42 to 48 inches from the floor. The unit fits a standard 2x4 electrical backbox, or a specific red metal backbox for surface-mounted industrial applications.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n \u003c!-- Section 5: FAQ --\u003e\n \u003cdiv class=\"accordion-item\"\u003e\n \u003cbutton class=\"accordion-header\"\u003e\n \u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\n \u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\n \u003c\/button\u003e\n \u003cdiv class=\"accordion-content\"\u003e\n \u003cdiv class=\"accordion-content-inner\"\u003e\n \u003ch3\u003eCan I use the RPS-E2 with an Ansul R-102 system?\u003c\/h3\u003e\n \u003cp\u003eNo. While both brands are owned by Johnson Controls, the RPS-E2 is specifically listed for Pyro-Chem hardware. Mixing manufacturers is a significant code violation and will void your UL listing.\u003c\/p\u003e\n\n \u003ch3\u003eWhat is the difference between single and double action?\u003c\/h3\u003e\n \u003cp\u003eA single-action station is pull only. A dual-action pull station like the 551166 requires two steps (push then pull). This second step is the industry's primary defense against expensive accidental discharges in busy work zones.\u003c\/p\u003e\n\n \u003ch3\u003eDoes the station come with a backbox?\u003c\/h3\u003e\n \u003cp\u003eThe 551166 fits a standard 2x4 electrical backbox. For surface-mounted industrial applications, a specific red metal backbox is often used to maintain the die-cast structural integrity and aesthetic.\u003c\/p\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n const headers = document.querySelectorAll('.accordion-header');\n headers.forEach(header =\u003e {\n header.addEventListener('click', function() {\n this.parentElement.classList.toggle('active');\n });\n });\n});\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n \"@context\": \"https:\/\/schema.org\/\",\n \"@type\": \"Product\",\n \"name\": \"Pyro-Chem RPS-E2 Double Action Pull Station\",\n \"description\": \"UL Listed dual-action electrical pull station for Pyro-Chem Kitchen Knight II and Monarch fire suppression systems. Heavy-duty die-cast metal with fire red powder coat finish. SPST switch for supervised low-voltage signal to Electric Control Head (ECH3). Requires push-then-pull actuation for nuisance trip mitigation. Mounts to standard 2x4 electrical backbox. FM Approved, CSFM Listed.\",\n \"sku\": \"551166\",\n \"mpn\": \"551166\",\n \"brand\": {\n \"@type\": \"Brand\",\n \"name\": \"Pyro-Chem\"\n },\n \"manufacturer\": {\n \"@type\": \"Organization\",\n \"name\": \"Pyro-Chem (A Johnson Controls Brand)\"\n },\n \"category\": \"Fire Suppression Equipment\",\n \"additionalProperty\": [\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Part Number\",\n \"value\": \"551166 (Model RPS-E2)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Action Type\",\n \"value\": \"Dual-Action Pull Station\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Switch Configuration\",\n \"value\": \"Single Pole Single Throw (SPST)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Construction\",\n \"value\": \"Heavy-Duty Die-Cast Metal\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Finish\",\n \"value\": \"Fire Red Powder Coat\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Compatibility\",\n \"value\": \"Kitchen Knight II \/ Monarch Series\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Compliance\",\n \"value\": \"UL Listed, FM Approved, CSFM Listed\"\n }\n ]\n}\n\u003c\/script\u003e\n\n\n\u003c\/body\u003e","brand":"PyroChem","offers":[{"title":"Default Title","offer_id":47487226347685,"sku":null,"price":107.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/Pyro-ChemDoubleActionPullStation-551166_eda8f9ef-3662-4bac-9e4f-1fe7f815b7f0.webp?v=1771286423"},{"product_id":"ansul-pyro-chem-1-2-compression-union-079827","title":"Ansul \/ Pyro-Chem 1\/2\" Compression Union - 079827","description":"\u003cp\u003eAnsul \/ Pyro-Chem 1\/2\" Compression Union \u003c\/p\u003e\n\u003cp\u003eP\/N: 079827\u003c\/p\u003e","brand":"Ansul","offers":[{"title":"Default Title","offer_id":47780347904165,"sku":null,"price":14.89,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/AnsulPyro-Chem12CompressionUnion-079827.png?v=1777645474"}],"url":"https:\/\/profireandsafety.com\/collections\/pyro-chem-monarch.oembed","provider":"Pro Fire and Safety","version":"1.0","type":"link"}