{"product_id":"amerex-oem-240-psi-dry-chemical-pressure-gauge-05225","title":"Amerex OEM 240 PSI Dry Chemical Pressure Gauge - 05225","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\u003eAmerex 05225 Pressure Gauge | 240 PSI | Dry Chemical 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 Amerex 05225 Pressure Gauge is a precision-engineered fire suppression diagnostic instrument designed specifically for the Amerex dry chemical series. In the high-stakes environment of facility safety, the pressure gauge serves as the visual pulse of fire readiness, the only immediate, non-invasive method for a facility manager or safety inspector to verify that a unit is capable of discharging its agent. Rated for a nominal operating pressure of 240 PSI, the 05225 is the industry standard for verifying the charge of ABC and Purple-K dry chemical fire extinguishers.\u003c\/p\u003e\n        \u003cp\u003eUnlike generic, off-the-shelf components, the 05225 is a genuine Amerex OEM component manufactured to meet ANSI\/UL safety standards. The 05225 provides a high-contrast interface featuring a vivid green operable zone, allowing for rapid daily inspections and ensuring that every unit in a facility's safety network is pressurized to its factory-specified suppression capacity.\u003c\/p\u003e\n\n        \u003ch3\u003eBourdon Tube Mechanics\u003c\/h3\u003e\n        \u003cp\u003eAt the heart of the 05225 is a hollow, C-shaped Bourdon tube sealed at one end and connected to the 1\/8\" NPT pressure inlet at the other. As internal pressure increases, the tube attempts to straighten, and this mechanical movement is translated through a precision gear train to the needle on the dial. This purely mechanical design requires no external power and is highly resistant to vibrations found in industrial environments.\u003c\/p\u003e\n\n        \u003ch3\u003ePressure-Temperature Dynamics\u003c\/h3\u003e\n        \u003cp\u003eFire extinguishers are subject to extreme temperature swings in outdoor or unheated storage. The 05225 is engineered to remain accurate across an operational window of -65°F to +120°F. This prevents the false-low readings that often plague low-quality gauges during winter months, where a gauge may appear to show a depleted unit when the pressure is simply reduced by cold ambient temperatures.\u003c\/p\u003e\n\n        \u003ch3\u003eCorrosion-Resistant Brass Body\u003c\/h3\u003e\n        \u003cp\u003eThe housing of the 05225 is constructed from solid brass. In commercial kitchens and industrial plants, aerosolized grease and chemical vapors can quickly corrode ferrous metals. The brass body provides natural resistance to oxidation, ensuring the 1\/8\" NPT pressure inlet threads remain liquid-tight for the entire service life of the extinguisher.\u003c\/p\u003e\n\n        \u003ch3\u003eGauge Drift Prevention\u003c\/h3\u003e\n        \u003cp\u003eCheap, non-OEM gauges are prone to drift, a phenomenon where the needle becomes stuck or loses calibration over time due to material fatigue. The 05225 utilizes premium alloys to ensure the reading today remains as accurate as it will be five years from now.\u003c\/p\u003e\n\n        \u003ch3\u003eVisual Clarity and Inspection Speed\u003c\/h3\u003e\n        \u003cp\u003eThe dial face is optimized for at-a-glance verification. During a monthly NFPA 10 walkthrough, an inspector may check hundreds of units. The high-contrast white face and green operable zone reduce eye-strain fatigue and help ensure that no depressurized unit is overlooked.\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\u003eAmerex Corporation\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd\u003ePart Number\u003c\/td\u003e\n              \u003ctd\u003e05225\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd\u003ePressure Rating\u003c\/td\u003e\n              \u003ctd\u003e240 PSI\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd\u003eCompatibility\u003c\/td\u003e\n              \u003ctd\u003eDry Chemical Series (ABC, BC, Purple-K)\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd\u003eBody Material\u003c\/td\u003e\n              \u003ctd\u003eSolid Brass\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd\u003eConnection Size\u003c\/td\u003e\n              \u003ctd\u003e1\/8\" NPT Pressure Inlet\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd\u003eStandards\u003c\/td\u003e\n              \u003ctd\u003eANSI\/UL Safety Standards\u003c\/td\u003e\n            \u003c\/tr\u003e\n            \u003ctr\u003e\n              \u003ctd\u003eOperating Temperature\u003c\/td\u003e\n              \u003ctd\u003e-65°F to +120°F\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\u003ePrecision Torque Protocol\u003c\/h3\u003e\n        \u003cp\u003eWhen replacing a damaged gauge, never turn the gauge by the round housing. This can break the internal seal of the Bourdon tube. Technicians must use a 7\/16\" open-end wrench on the flat stem installation point at the base to achieve a liquid-tight seal.\u003c\/p\u003e\n\n        \u003ch3\u003eManaging Regulator Over-Pressure\u003c\/h3\u003e\n        \u003cp\u003eWhen pressurizing an extinguisher after a recharge, do not exceed the operating pressure by more than 25 PSI. Introducing a massive pressure spike from a nitrogen regulator can permanently deform the internal mechanisms, rendering the gauge inaccurate.\u003c\/p\u003e\n\n        \u003ch3\u003ePlastic Face Integrity\u003c\/h3\u003e\n        \u003cp\u003eThe clear face of the 05225 is made of a high-impact polymer. Avoid using harsh solvents such as brake cleaner during cleaning, as these can cause crazing or clouding, making the green operable zone unreadable.\u003c\/p\u003e\n\n        \u003ch3\u003eMandatory Replacement Criteria\u003c\/h3\u003e\n        \u003cp\u003eUnder NFPA 10, a gauge must be replaced if the lens is cracked, the needle is bent, or the needle does not return to zero when the unit is depressurized.\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 05225 on a Halon or Water extinguisher?\u003c\/h3\u003e\n        \u003cp\u003eNo. Gauges are calibrated for the specific density and expansion characteristics of the extinguishing agent. The 05225 is specifically designed for the dry chemical series. Using it on a water or Halon unit can result in inaccurate readings and a failed discharge.\u003c\/p\u003e\n\n        \u003ch3\u003eWhat causes an extinguisher gauge to go into the overcharged (Red) zone?\u003c\/h3\u003e\n        \u003cp\u003eThis is often caused by thermal expansion. If an extinguisher is charged in a cool environment and then moved into direct sunlight, the internal pressure will rise. While a minor increase is normal, a needle deep in the red indicates the unit may have been over-pressurized during service.\u003c\/p\u003e\n\n        \u003ch3\u003eIs it normal for the needle to move slightly depending on the weather?\u003c\/h3\u003e\n        \u003cp\u003eYes. Pressure is directly proportional to temperature in a constant volume, so you may see the needle move within the green zone as the temperature shifts. As long as the needle remains within the green operable arc, the extinguisher is considered compliant.\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\": \"Amerex 05225 Pressure Gauge | 240 PSI | Dry Chemical Series\",\n  \"description\": \"OEM solid brass Bourdon tube pressure gauge rated 240 PSI for Amerex ABC, BC, and Purple-K dry chemical fire extinguishers. 1\/8 inch NPT pressure inlet. High-contrast green operable zone dial. Operating temperature -65 degrees F to +120 degrees F. ANSI\/UL compliant. 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