{"title":"Pipe and Pipe Fittings","description":"","products":[{"product_id":"1-2-90-degree-elbow-galvanized","title":"1\/2\" 90 Degree Elbow Galvanized","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 1\/2\" 90-Degree Galvanized Elbow is a foundational component for industrial, commercial, and fire protection piping systems. Engineered to provide a precise right-angle direction change, this fitting allows for complex routing in tight spaces without sacrificing the structural integrity of the fluid line. Unlike black iron fittings, this elbow has undergone a rigorous hot-dip galvanization process, coating the interior and exterior in a thick layer of zinc. This ensures the fitting remains free of rust and scale—a critical requirement for automatic fire sprinkler systems and compressed air lines where internal debris can lead to nozzle clogs and system failure.\u003c\/p\u003e\n \n \u003cp\u003eBuilt to withstand the high pressures common in hydraulic and pneumatic applications, this elbow features precision-cut NPT (National Pipe Thread) connections. This ensures a deep, wedge-fit seal when paired with standard threaded pipe fittings, creating a leak-resistant joint that can handle the thermal expansion and mechanical vibrations of a working industrial environment.\u003c\/p\u003e\n\n \u003ch3\u003eThe Science of Galvanization: Zinc-Bonded Corrosion Defense\u003c\/h3\u003e\n \n \u003cp\u003e\u003cstrong\u003e1. Sacrificial Anode Protection\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eThe galvanization process does not just \"coat\" the steel; it creates a metallurgical bond. If the fitting is scratched or scuffed during installation, the surrounding zinc acts as a sacrificial anode, oxidizing in place of the steel. This prevents \"rust-creep,\" ensuring the elbow's wall thickness remains intact for decades. This is a vital feature for dry pipe fire sprinkler system environments where moisture and oxygen are frequently present.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003e2. Internal Scale Mitigation\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eIn fire protection, \"MIC\" (Microbiologically Influenced Corrosion) is a significant threat. The smooth, zinc-plated interior of this elbow resists the accumulation of mineral scale and biological growth, maintaining a high flow factor and ensuring consistent flow rates during an emergency. This reliability is why these are often specified in commercial fire sprinkler system designs.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003e3. Environmental Versatility\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eThe hot-dip galvanized finish is UV-stable and resistant to the aggressive atmospheres of industrial zones and coastal regions. This makes the 1\/2\" elbow suitable for outdoor fire department connection (FDC) piping, rooftop compressed air lines, and unheated warehouse plumbing.\u003c\/p\u003e\n\n \u003ch3\u003eEngineering for Pressure: NPT Thread Geometry\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eReinforced Wall Thickness:\u003c\/strong\u003e The \"bend\" of a 90-degree elbow is subject to higher erosion and pressure stress. These fittings are manufactured with reinforced hubs to ensure that the stress of pressurized fluid turning the corner does not lead to \"pinhole\" leaks or structural fatigue.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePrecision NPT Threading:\u003c\/strong\u003e National Pipe Thread is designed with a taper. Our 1\/2\" elbows are gauged to strict tolerances, ensuring the correct \"thread engagement\" to prevent leaks without over-stressing the fitting.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLaminar Flow Optimization:\u003c\/strong\u003e While a 90-degree turn naturally creates turbulence, the smooth internal casting of our galvanized elbows minimizes friction loss (pressure drop), allowing your fire pump parts and compressors to operate more efficiently.\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\"\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 1\/2\" Galvanized Elbow is a versatile workhorse across multiple trades requiring firefighting equipment supplies:\u003c\/p\u003e\n\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eFire Sprinkler Systems:\u003c\/strong\u003e The standard for \"branch line\" piping where 1\/2\" drops are required for individual sprinkler heads.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFire Extinguisher Service Equipment:\u003c\/strong\u003e Used in the construction of CO2 recharge stands, nitrogen regulated manifolds, and hydro-test cabinets.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eIndustrial Compressed Air:\u003c\/strong\u003e Routing air lines through manufacturing facilities where moisture would cause standard fittings to contaminate pneumatic fire tools.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommercial Plumbing \u0026amp; HVAC:\u003c\/strong\u003e Providing durable direction changes for condensate drains and water supply lines.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSafety Railings:\u003c\/strong\u003e Due to high tensile strength, these are frequently used for fire safety material cages and industrial handrails.\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\u003eMaterial\u003c\/td\u003e\n \u003ctd\u003eHot-Dip Galvanized Malleable Iron\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eFitting Type\u003c\/td\u003e\n \u003ctd\u003e90-Degree Elbow\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eConnection Size\u003c\/td\u003e\n \u003ctd\u003e1\/2\" Female NPT\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMax Pressure\u003c\/td\u003e\n \u003ctd\u003e150 PSI (WOG) \/ 300 PSI (Static)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompliance\u003c\/td\u003e\n \u003ctd\u003eMeets ASTM \u0026amp; ASME Threading Requirements\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 ensure a leak-free installation and maintain NFPA 13 compliance, follow these professional protocols:\u003c\/p\u003e\n\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eProper Thread Sealant:\u003c\/strong\u003e Always use a high-quality PTFE tape or pipe dope. This is standard procedure for any fire sprinkler installation.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAvoid Over-Tightening:\u003c\/strong\u003e Because NPT threads are tapered, over-tightening can \"split\" the hub. Aim for \"Hand-tight plus 1.5 to 2 turns\" with a pipe wrench.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eVisual Inspection:\u003c\/strong\u003e Before installation, ensure no zinc \"shavings\" are present. Internal obstructions can lead to failures in fire sprinkler heads.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMixed Metal Caution:\u003c\/strong\u003e Avoid connecting galvanized fittings directly to copper pipe without a dielectric union to prevent galvanic corrosion.\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\u003eWhere can I buy fire sprinkler parts like these elbows?\u003c\/strong\u003e\u003cbr\u003e\n You should visit a specialized fire sprinkler supply or an industrial plumbing wholesaler. While big-box stores carry galvanized fittings, they often lack the \"High-Spec\" industrial pressure ratings required for fire protection.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eWhat is the difference between this and a \"Street\" Elbow?\u003c\/strong\u003e\u003cbr\u003e\n A standard elbow has two female ends. A \"street elbow\" has one male and one female end. These are common pipe fitting types used depending on the orientation of your pipe run.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eDo these require a fire alarm inspection?\u003c\/strong\u003e\u003cbr\u003e\n While the fitting itself doesn't require an alarm test, it is part of the system that must be verified during a fire protection system inspection. If an elbow leaks, it could compromise the pressure required to trigger a flow switch.\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\": \"1\/2 Inch 90-Degree Galvanized Elbow - Industrial Grade NPT Threaded\",\n \"description\": \"Hot-dip galvanized malleable iron 90-degree elbow fitting with 1\/2 inch female NPT connections for fire sprinkler systems and industrial piping\",\n \"brand\": {\n \"@type\": \"Brand\",\n \"name\": \"Industrial Grade\"\n },\n \"additionalProperty\": [\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Material\",\n \"value\": \"Hot-Dip Galvanized Malleable Iron\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Fitting Type\",\n \"value\": \"90-Degree Elbow\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Connection Size\",\n \"value\": \"1\/2 inch Female NPT\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Max Pressure\",\n \"value\": \"150 PSI (WOG) \/ 300 PSI (Static)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Compliance\",\n \"value\": \"Meets ASTM \u0026 ASME Threading Requirements, NFPA 13\"\n }\n ],\n \"category\": \"Pipe Fittings\"\n }\n \u003c\/script\u003e\n\u003c\/div\u003e","brand":"Pipe and Pipe Fittings","offers":[{"title":"Default Title","offer_id":45872583999653,"sku":"1\/2-Galvanized-90-Degree-Elbow","price":0.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pipe-and-pipe-fittings-simple-default-title-1-2-90-degree-elbow-galvanized-33211357528229_b3814a9a-2a05-41ef-bfe8-751e375fcec7.webp?v=1771365296"},{"product_id":"1-2-coupling-galvanized","title":"1\/2\" Coupling Galvanized","description":"","brand":"Pipe and Pipe Fittings","offers":[{"title":"Default Title","offer_id":45872584032421,"sku":"1\/2-Galvanized-Coupling","price":1.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pipe-and-pipe-fittings-simple-default-title-1-2-coupling-galvanized-33211357986981_ebe2b151-8341-470e-9255-78770e33488d.webp?v=1771365348"},{"product_id":"1-2-tee-galvanized","title":"1\/2\" Tee Galvanized","description":"","brand":"Pipe and Pipe Fittings","offers":[{"title":"Default Title","offer_id":45872584065189,"sku":"1\/2-Galvanized-T","price":1.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pipe-and-pipe-fittings-simple-default-title-1-2-tee-galvanized-33211358150821_2afc02b2-f9b5-473f-a4e3-01a078de1b2e.webp?v=1771365377"},{"product_id":"1-2-union-galvanized","title":"1\/2\" Union Galvanized","description":"","brand":"Pipe and Pipe Fittings","offers":[{"title":"Default Title","offer_id":45872584097957,"sku":"1\/2-Galvanized-Union","price":5.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pipe-and-pipe-fittings-simple-default-title-1-2-union-galvanized-33211358412965_aa54b483-3924-44e9-a335-b8d59d30aceb.webp?v=1771365409"},{"product_id":"3-8-plug-black","title":"3\/8\" Plug Black","description":"","brand":"Pipe and Pipe Fittings","offers":[{"title":"Default Title","offer_id":45872584130725,"sku":"3\/8-Plug","price":4.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pipe-and-pipe-fittings-simple-default-title-3-8-plug-black-33441208139941_70d792de-ab13-4c28-af42-c64dd4b9bc64.webp?v=1771286999"},{"product_id":"3-8-union-stainless-steel-schedule-40","title":"3\/8\" Union Stainless Steel Schedule 40","description":"","brand":"Pipe and Pipe Fittings","offers":[{"title":"Default Title","offer_id":45872584163493,"sku":"3\/8-S.S-Union","price":6.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pipe-and-pipe-fittings-simple-default-title-3-8-union-stainless-steel-schedule-40-33441207222437_ba360e97-379f-4d59-bbe8-8c97229fa6ab.webp?v=1771286998"},{"product_id":"3-8-black-tee","title":"3\/8\" Black Tee","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 3\/8\" Black Pipe Tee is a foundational industrial fitting engineered to provide a high-strength, 90-degree branch connection in permanent piping runs. Shaped like the letter \"T,\" this fitting features three female-threaded ports, allowing a single fluid or gas line to be split into two separate paths or combined into a single header. Unlike standard hardware-grade fittings, this tee is manufactured from high-strength carbon steel, providing the structural integrity required for high-pressure gas manifolds, pneumatic drop lines, and hydraulic sensing systems.\u003c\/p\u003e\n \n \u003cp\u003eThe \"Black\" designation refers to the protective black oxide scale formed during the manufacturing process, which provides a layer of dry-environment corrosion resistance. This makes it the industry standard for natural gas piping, where galvanized coatings are often prohibited due to the risk of zinc flaking that can clog sensitive downstream openings. Designed to meet Schedule 40 specifications, this tee is a reliable component for contractors who demand leak-free performance in demanding industrial and commercial environments.\u003c\/p\u003e\n\n \u003cp\u003eThe 3\/8\" size is ideal for creating branch points in gas distribution systems, compressed air manifolds, and control line setups. The three-port design gives you flexibility to split one line into two or combine two lines into one, making it essential for building efficient piping systems.\u003c\/p\u003e\n\n \u003ch3\u003eUnderstanding Tee Fittings: Run and Branch\u003c\/h3\u003e\n \n \u003cp\u003e\u003cstrong\u003eThree-Port Design\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eA tee fitting has three openings. The two openings in a straight line are called the \"Run\" (the main flow path). The opening at 90 degrees is called the \"Branch\" (the side outlet). This design allows you to maintain the main pipe direction while adding a side connection for equipment or additional lines.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eNPT Thread Sealing\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eThis tee features female threads cut at a 1:16 taper on all three ports. As a male-threaded nipple or pipe is screwed into the tee, the tapered threads wedge together to form a metal-to-metal mechanical seal. This interference fit allows the system to handle significant internal pressures, up to 300 PSI static, without the joint breaking or leaking.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eSmooth Internal Flow\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eWhen a fluid or gas enters the Run of the tee and exits through the Branch, it undergoes a sudden change in direction. The internal casting of this 3\/8\" tee is smoothed to minimize flow disruption. This reduces the pressure drop (friction loss) across the fitting, which is critical for sensitive pneumatic instruments and gas regulators that need consistent pressure.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eCarbon Steel Strength\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eManufactured from ASTM-grade carbon steel, this tee offers superior tensile and yield strength compared to brass. This is vital in industrial settings where the piping may be subjected to mechanical vibration or temperature changes. The steel construction ensures the fitting stays reliable for many years without cracking or weakening.\u003c\/p\u003e\n\n \u003ch3\u003eWhy Professionals Choose Tee Fittings\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eEfficient Manifold Building:\u003c\/strong\u003e In modern boiler rooms, creating multiple drops from a single header is a common requirement. The 3\/8\" tee allows for the assembly of compact, low-profile piping manifolds that can distribute gas or air to several pieces of equipment simultaneously.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGas System Approved:\u003c\/strong\u003e Black steel is chemically compatible with natural gas and propane including the smell chemicals added for safety. The absence of a zinc coating ensures that no internal pipe scale can flake off and clog small gas openings in high-efficiency industrial boilers.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e The black oxide finish provides a high-friction surface that grips pipe wrenches well. This allows for the high-torque installation required to achieve a gas-tight seal without slipping.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCode Compliant:\u003c\/strong\u003e Meets ASTM A197, ASME B16.3, and ASME B1.20.1 standards for industrial piping systems.\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\"\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 3\/8\" Black Pipe Tee works well for many industrial and commercial applications:\u003c\/p\u003e\n\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eNatural Gas \u0026amp; Propane Manifolds:\u003c\/strong\u003e The primary choice for splitting a gas supply line to feed both a pilot light and a main burner assembly on industrial furnaces.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePneumatic Distribution Lines:\u003c\/strong\u003e Used in manufacturing facilities to create drop points from a main overhead air header (90 to 150 PSI) to individual workstations.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFire Suppression Sensing Lines:\u003c\/strong\u003e Employed in specialized fire suppression systems to branch pressure-sensing tubing that triggers the release of clean agents.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInstrumentation Mounting:\u003c\/strong\u003e Providing a branch point for industrial pressure gauges, sensors, and temperature sensors for easier visual monitoring.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMulti-Burner Systems:\u003c\/strong\u003e Distributing gas to multiple burners from a single supply line in commercial kitchens and industrial heating systems.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAir Tool Stations:\u003c\/strong\u003e Creating branch connections for compressed air tools in shop and manufacturing 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\u003eMaterial\u003c\/td\u003e\n \u003ctd\u003eHigh-Strength Carbon Steel (ASTM A53)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eFinish\u003c\/td\u003e\n \u003ctd\u003eBlack Oxide Coating\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNominal Pipe Size\u003c\/td\u003e\n \u003ctd\u003e3\/8\" (NPS)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eConfiguration\u003c\/td\u003e\n \u003ctd\u003e3-Way Tee (Run and Branch)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eConnection Type\u003c\/td\u003e\n \u003ctd\u003eFemale NPT Threaded\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eWall Schedule\u003c\/td\u003e\n \u003ctd\u003eSchedule 40 (Standard Wall)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePressure Rating\u003c\/td\u003e\n \u003ctd\u003e150 PSI (WOG) \/ 300 PSI (Static)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCompliance\u003c\/td\u003e\n \u003ctd\u003eMeets ASTM A197 \/ ASME B16.3 \/ ASME B1.20.1\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; 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 ensure a leak-free installation and maintain NFPA 54 compliance, follow these professional protocols:\u003c\/p\u003e\n\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eUse Gas-Rated Sealant:\u003c\/strong\u003e For gas lines, always use yellow PTFE tape or pipe dope rated specifically for hydrocarbons. Apply sealant to male threads only, never to female threads.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFollow the Run and Branch Rule:\u003c\/strong\u003e When installing a tee, ensure the highest flow volume stays on the Run (the straight-through path) to minimize pressure drop. The Branch (the 90-degree exit) should be reserved for the individual equipment drop.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSupport the Assembly:\u003c\/strong\u003e Tee fittings create stress points in pipe systems. Make sure all connected pipes are properly supported to prevent sagging and stress on the tee joints.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePrevent Different Metal Contact:\u003c\/strong\u003e Never connect black steel tees directly to copper without a special joining fitting. Different metals touching can cause rapid rust and pipe failure.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTest Every Connection:\u003c\/strong\u003e Every joint must be pressure tested with soap solution or a digital leak detector before you use the system. This ensures a complete gas-tight seal on all three ports.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFollow Local Codes:\u003c\/strong\u003e Always check local building codes for specific requirements about tee fitting installation in your area.\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\u003eWhat is the difference between a standard tee and a reducing tee?\u003c\/strong\u003e\u003cbr\u003e\n A standard tee (like this one) has the same size threads on all three ports. A reducing tee has one or more ports with a different diameter. You use this standard 3\/8\" tee when all connected pipes are 3\/8\" NPS.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eCan I use this for a natural gas line in my home?\u003c\/strong\u003e\u003cbr\u003e\n Yes. Black steel is the preferred, code-compliant material for natural gas because it is strong and does not flake like galvanized pipe. Always ensure your installation meets local plumbing and mechanical codes.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eIs this safe for compressed air?\u003c\/strong\u003e\u003cbr\u003e\n Yes, black steel is a standard material for industrial compressed air lines. It is rated for 150 PSI working pressure, which easily covers the 90 to 125 PSI range used in most pneumatic piping systems.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eWhich port should I use for the main line and which for the branch?\u003c\/strong\u003e\u003cbr\u003e\n The two ports in a straight line form the Run (main flow path). Use these for your main supply line. The port at 90 degrees is the Branch. Use this for your equipment connection or secondary line. This arrangement minimizes pressure drop.\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\": \"3\/8 Inch Black Pipe Tee - Schedule 40 NPT Threaded\",\n \"description\": \"High-strength carbon steel black pipe tee with Schedule 40 wall thickness and NPT female threads for gas, pneumatic, and industrial piping branch connections\",\n \"brand\": {\n \"@type\": \"Brand\",\n \"name\": \"Industrial Grade\"\n },\n \"additionalProperty\": [\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Material\",\n \"value\": \"High-Strength Carbon Steel (ASTM A53)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Finish\",\n \"value\": \"Black Oxide Coating\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Nominal Pipe Size\",\n \"value\": \"3\/8 inch (NPS)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Configuration\",\n \"value\": \"3-Way Tee (Run and Branch)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Connection Type\",\n \"value\": \"Female NPT Threaded\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Wall Schedule\",\n \"value\": \"Schedule 40 (Standard Wall)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Pressure Rating\",\n \"value\": \"150 PSI (WOG) \/ 300 PSI (Static)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Compliance\",\n \"value\": \"Meets ASTM A197 \/ ASME B16.3 \/ ASME B1.20.1\"\n }\n ],\n \"category\": \"Pipe Fittings\"\n }\n \u003c\/script\u003e\n\u003c\/div\u003e","brand":"Pipe and Pipe Fittings","offers":[{"title":"Default Title","offer_id":45872584196261,"sku":"38BlackTee","price":1.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pipe-and-pipe-fittings-simple-default-title-3-8-black-tee-33211375550629_5191f6eb-ce0c-4e4d-9d02-0d2870c3bc4e.webp?v=1771286997"},{"product_id":"3-8-union-black","title":"3\/8\" Union Black","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 3\/8\" Black Pipe Union is a specialized, three-piece threaded fitting engineered to provide a convenient disconnect point in a permanent piping run. Unlike a standard coupling, which requires the entire pipe run to be taken apart to make a change, a union allows for the central nut to be unscrewed, separating the two sections of pipe instantly. This makes it an essential component for systems requiring periodic maintenance, such as lines connected to industrial boilers or gas regulators.\u003c\/p\u003e\n \n \u003cp\u003eConstructed from heavy-duty black steel, this 3\/8\" union is designed to handle the high-torque requirements of natural gas piping and compressed air systems. The internal design features a precision-machined ground-joint seat. This design creates a high-pressure seal without the need for a separate rubber gasket that could wear out over time. For facility managers, the 3\/8\" black union is the top choice for building service-friendly, high-integrity piping systems.\u003c\/p\u003e\n\n \u003cp\u003eThe 3\/8\" size is perfect for gas meter connections, compressed air drop lines, and equipment supply lines where you need the ability to disconnect quickly without cutting pipes. This fitting saves time and money during maintenance and equipment replacement.\u003c\/p\u003e\n\n \u003ch3\u003eHow a Union Works: Three Parts Working Together\u003c\/h3\u003e\n \n \u003cp\u003eThe 3\/8\" union consists of three distinct components that work together to provide a leak-proof, separable connection:\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eThe Female Tailpiece\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eThis piece threads onto the incoming pipe section using standard male NPT threaded connections. It has female threads on one end and the ground-joint sealing surface on the other.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eThe Male Tailpiece\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eThis piece threads onto the outgoing pipe section and features the precision-machined ball or cone face. This machined surface mates perfectly with the female tailpiece to create the seal.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eThe Union Nut\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eThe central collar that draws the two tailpieces together, compressing the internal faces into a tight seal. By simply loosening the union nut with a pipe wrench, the two halves of the piping system can be pulled apart.\u003c\/p\u003e\n\n \u003cp\u003eThis slide-out capability is critical in mechanical rooms where equipment must be disconnected for repair without cutting the hard-piped lines. This saves significant time and prevents damage to existing pipe installations.\u003c\/p\u003e\n\n \u003ch3\u003eGround-Joint Sealing Technology\u003c\/h3\u003e\n \n \u003cp\u003e\u003cstrong\u003eMetal-to-Metal Contact\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eThe internal faces of the union tailpieces are machined to a precise angle. When the nut is tightened, these surfaces are compressed into a ground joint. This is superior to gasketed unions because it cannot blow out under pressure and is highly resistant to the smell chemicals used in fuel gas. The metal seal also handles temperature changes better than rubber gaskets.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eHeavy-Duty Construction\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eThe external union nut is designed with heavy-duty lugs, providing a secure grip for pipe wrenches. This ensures the union can be tightened to the gas-tight level and easily loosened years later, even in harsh environments. The strong lugs prevent rounding and stripping during installation and removal.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eCarbon Steel Durability\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eManufactured from ASTM-grade carbon steel, this union offers the structural strength needed to handle temperature changes and high-pressure air systems. The black steel construction resists cracking and stays reliable through thousands of pressure cycles.\u003c\/p\u003e\n\n \u003ch3\u003eWhy Professionals Choose Unions\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy Equipment Replacement:\u003c\/strong\u003e In commercial facilities, equipment failure should not mean a total system shutdown. Placing 3\/8\" unions on the supply lines of a regulator allows for quick equipment swaps without extensive pipe work.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGas System Approved:\u003c\/strong\u003e Black steel is the industry-standard material for propane and natural gas. Unlike galvanized pipe, the black oxide finish of this union is stable and safe for use with hydrocarbons.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eVibration Resistant:\u003c\/strong\u003e The mass of the 3-piece union provides a robust connection resistant to mechanical vibration from industrial compressors, reducing the risk of leaks from fatigue.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eNo Cutting Required:\u003c\/strong\u003e Disconnect and reconnect pipes without cutting, threading, or welding. This saves time and preserves the integrity of your piping system.\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\"\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 3\/8\" Black Pipe Union works well for many industrial and commercial applications:\u003c\/p\u003e\n\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eNatural Gas \u0026amp; Propane Meter Sets:\u003c\/strong\u003e Installed near the regulator to allow for easy testing or replacement of the gas meter without cutting pipes.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompressed Air Drop Lines:\u003c\/strong\u003e Placed near air filters and moisture traps to facilitate rapid maintenance without depressurizing the entire plant header.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eIndustrial Kitchen Equipment:\u003c\/strong\u003e The standard connector for gas-powered ovens, allowing them to be pulled out for deep cleaning and maintenance.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePneumatic Control Manifolds:\u003c\/strong\u003e Providing a disconnect point for sensitive control valves and pressure sensors that need periodic calibration.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGas Appliance Connections:\u003c\/strong\u003e Installing water heaters, furnaces, and boilers where codes require a union for service access.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAir Tool Stations:\u003c\/strong\u003e Creating service points in shop compressed air systems for quick tool connection and removal.\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\u003eMaterial\u003c\/td\u003e\n \u003ctd\u003eHigh-Strength Carbon Steel (ASTM A53)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eFinish\u003c\/td\u003e\n \u003ctd\u003eBlack Oxide Finish\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSize\u003c\/td\u003e\n \u003ctd\u003e3\/8\" NPS\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDesign\u003c\/td\u003e\n \u003ctd\u003e3-Piece Ground Joint\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eConnection\u003c\/td\u003e\n \u003ctd\u003eFemale NPT Threaded\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePressure Rating\u003c\/td\u003e\n \u003ctd\u003e150 PSI (WOG) \/ 300 PSI (Static)\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; 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 ensure a leak-free installation and maintain NFPA 54 compliance, follow these professional protocols:\u003c\/p\u003e\n\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eSealant Placement is Critical:\u003c\/strong\u003e Apply yellow PTFE tape or pipe dope only to the NPT threads connecting the tailpieces to the pipe. Never put sealant on the internal ground-joint seat, as it can interfere with the metal-to-metal seal.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAlign Pipes Carefully:\u003c\/strong\u003e Ensure pipe sections are perfectly aligned before tightening. Forcing a misaligned nut can strip threads and cause leaks. Use a level or straight edge to check alignment.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTighten in Stages:\u003c\/strong\u003e Tighten the union nut gradually and evenly. Make several passes around the nut rather than tightening one side completely first. This ensures even pressure on the ground joint.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePrevent Different Metal Contact:\u003c\/strong\u003e Never connect black steel unions directly to copper without a special joining fitting. Different metals touching can cause rapid rust and pipe failure.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTest Every Union:\u003c\/strong\u003e Every union must be pressure tested with soap solution or a digital leak detector before you use the system. This ensures a complete gas-tight seal.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFollow Local Codes:\u003c\/strong\u003e Always check local building codes for specific requirements about union placement and installation in your area.\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\u003eWhat is the advantage of a union over a coupling?\u003c\/strong\u003e\u003cbr\u003e\n A coupling permanently joins two pipes and cannot be easily separated. A union allows you to disconnect the pipes by simply unscrewing the central nut, making equipment service and replacement much easier without cutting pipes.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eDo I need to replace the union after disconnecting it?\u003c\/strong\u003e\u003cbr\u003e\n No. A properly installed union can be disconnected and reconnected many times. The ground-joint seal is designed for repeated use. Just make sure to clean the sealing surfaces before reconnecting.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eWhy should I not use sealant on the ground joint?\u003c\/strong\u003e\u003cbr\u003e\n The ground joint creates a metal-to-metal seal through precision machining and compression. Sealant can prevent proper contact between the surfaces and actually cause leaks. Only use sealant on the NPT threads that connect to the pipes.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eHow tight should the union nut be?\u003c\/strong\u003e\u003cbr\u003e\n Tighten the union nut firmly with a pipe wrench until you feel solid resistance. Over-tightening can damage the ground-joint surfaces. After pressurizing, check for leaks and only tighten more if bubbles appear during testing.\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\": \"3\/8 Inch Black Pipe Union - 3-Piece Ground Joint Schedule 40\",\n \"description\": \"High-strength carbon steel black pipe union with 3-piece ground joint design and NPT threads for serviceable gas, air, and industrial piping connections\",\n \"brand\": {\n \"@type\": \"Brand\",\n \"name\": \"Industrial Grade\"\n },\n \"additionalProperty\": [\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Material\",\n \"value\": \"High-Strength Carbon Steel (ASTM A53)\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Finish\",\n \"value\": \"Black Oxide Finish\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Size\",\n \"value\": \"3\/8 inch NPS\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Design\",\n \"value\": \"3-Piece Ground Joint\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Connection\",\n \"value\": \"Female NPT Threaded\"\n },\n {\n \"@type\": \"PropertyValue\",\n \"name\": \"Pressure Rating\",\n \"value\": \"150 PSI (WOG) \/ 300 PSI (Static)\"\n }\n ],\n \"category\": \"Pipe Fittings\"\n }\n \u003c\/script\u003e\n\u003c\/div\u003e","brand":"Pipe and Pipe Fittings","offers":[{"title":"Default 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Title","offer_id":45872585080997,"sku":"GALV-NIP34-20","price":0.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pipe-and-pipe-fittings-simple-default-title-3-4-x-2-nipple-galvanized-33211362377893_9cd55f21-692e-4462-90fa-fde75fca5b16.webp?v=1771366430"},{"product_id":"3-4-x-2-1-2-nipple-galvanized","title":"3\/4\" x 2-1\/2\" Nipple Galvanized","description":"","brand":"Pipe and Pipe Fittings","offers":[{"title":"Default Title","offer_id":45872585113765,"sku":"GALV-NIP34-25","price":0.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pipe-and-pipe-fittings-simple-default-title-3-4-x-2-1-2-nipple-galvanized-33211362443429_7eb2dc29-eacc-4137-b253-5ee24d7467c2.webp?v=1771366466"},{"product_id":"3-4-x-3-nipple-galvanized","title":"3\/4\" x 3\" Nipple Galvanized","description":"","brand":"Pipe and Pipe Fittings","offers":[{"title":"Default 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Title","offer_id":45872585277605,"sku":"GALV-NIP34-50","price":1.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pipe-and-pipe-fittings-simple-default-title-3-4-x-5-nipple-galvanized-33211362934949_f02d9692-e4c0-453f-b63a-472521c5424b.webp?v=1771286970"},{"product_id":"3-4-x-5-1-2-nipple-galvanized","title":"3\/4\" x 5-1\/2\" Nipple Galvanized","description":"","brand":"Pipe and Pipe Fittings","offers":[{"title":"Default Title","offer_id":45872585310373,"sku":"GALV-NIP34-55","price":1.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pipe-and-pipe-fittings-simple-default-title-3-4-x-5-1-2-nipple-galvanized-33211363000485_dc834600-913d-4b28-a3f0-0587ebe66ae2.webp?v=1771286969"},{"product_id":"3-4-x-6-nipple-galvanized","title":"3\/4\" x 6\" Nipple Galvanized","description":"","brand":"Pipe and Pipe Fittings","offers":[{"title":"Default Title","offer_id":45872585343141,"sku":"GALV-NIP34-60","price":1.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pipe-and-pipe-fittings-simple-default-title-3-4-x-6-nipple-galvanized-33211363066021_3583305d-97d7-4bca-adee-b2a7cb8dd384.webp?v=1771286968"},{"product_id":"3-4-union-galvanized","title":"3\/4\" Union Galvanized","description":"","brand":"Pipe and Pipe Fittings","offers":[{"title":"Default Title","offer_id":45872585375909,"sku":"GALV-UNI-34","price":6.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/5605\/8021\/files\/pipe-and-pipe-fittings-simple-default-title-3-4-union-galvanized-33211362181285_e7028268-c71b-4f61-ae3b-3f50feedc258.webp?v=1771366352"},{"product_id":"1-4-90-deg-elbow-black-pipe","title":"1\/4\" 90 Deg. Elbow, Black Pipe","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 1\/4\" 90° Black Pipe Elbow is a foundational industrial fitting engineered to provide a precise right-angle direction change in small-diameter piping systems. Unlike standard hardware-grade fittings, this elbow is manufactured from high-strength carbon steel, providing the structural rigidity required for pneumatic control lines, gas pilot assemblies, and hydraulic sensor manifolds.\u003c\/p\u003e\n \n \u003cp\u003eThe \"Black\" designation refers to the protective black oxide scale formed during the manufacturing process, which provides a layer of dry-environment corrosion resistance. This makes it the industry standard for natural gas piping, where galvanized coatings are often prohibited due to the risk of zinc flaking that can clog sensitive downstream openings. Designed to meet Schedule 40 specifications, this elbow is a reliable component for contractors who demand leak-free performance in demanding industrial and commercial environments.\u003c\/p\u003e\n\n \u003cp\u003eThe 1\/4\" size is ideal for small control lines, pilot gas systems, and instrument connections where space is limited and precision is critical. The 90-degree angle allows you to make clean right-angle turns around obstacles and equipment in tight mechanical rooms.\u003c\/p\u003e\n\n \u003ch3\u003eUnderstanding Thread Sealing Technology\u003c\/h3\u003e\n \n \u003cp\u003e\u003cstrong\u003eNPT Tapered Thread Design\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eThis elbow features female threads cut at a 1:16 taper. As a male-threaded nipple or pipe is screwed into the elbow, the tapered threads wedge together to form a metal-to-metal mechanical seal. This interference fit is what allows the system to handle significant internal pressures, up to 300 PSI static, without the joint breaking or leaking. The taper design means the seal gets tighter as you properly tighten the fitting.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eSmooth Flow Design\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eIn a 90-degree turn, the fluid or gas undergoes a sudden change in direction. The internal casting of this 1\/4\" elbow is smoothed to minimize flow disruption. This reduces the pressure drop (friction loss) across the fitting, which is critical for sensitive pneumatic instruments and gas regulators that require precise delivery pressures. Better flow means more consistent system performance.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eSuperior Material Strength\u003c\/strong\u003e\u003c\/p\u003e\n \u003cp\u003eManufactured from ASTM-grade carbon steel, this elbow offers superior tensile and yield strength compared to brass or plastic alternatives. This is vital in industrial settings where the piping may be subjected to mechanical vibration from pumps or temperature changes. The carbon steel construction ensures long-term reliability without cracking or weakening over time.\u003c\/p\u003e\n\n \u003ch3\u003eWhy Technicians Choose This Fitting\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eSpace-Saving Design:\u003c\/strong\u003e In modern boiler rooms and chemical injection systems, space is often the primary constraint. The 1\/4\" elbow allows for close-quarter routing of sensing lines and pilot tubes, enabling complex control setups in a fraction of the space.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGas System Compatible:\u003c\/strong\u003e Black steel is chemically compatible with natural gas and propane including the smell chemicals added for safety. The absence of a zinc coating ensures that no internal pipe scale can flake off and clog small gas openings, thermocouple ports, or burner pilots.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy to Install:\u003c\/strong\u003e The black oxide finish provides a high-friction surface that grips pipe wrenches well. This allows for the high-torque installation required to achieve a gas-tight seal without slipping.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCode Approved:\u003c\/strong\u003e Meets NFPA 54 and local building codes for gas and pneumatic systems when installed according to manufacturer specifications.\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\"\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 1\/4\" 90° Black Pipe Elbow works well for many industrial and commercial applications:\u003c\/p\u003e\n\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eNatural Gas Pilot Lines:\u003c\/strong\u003e The primary choice for routing gas from a main regulator to the pilot assembly on industrial boilers and commercial water heaters.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePneumatic Control Systems:\u003c\/strong\u003e Used in manufacturing facilities to route high-pressure air (90 to 150 PSI) to actuators, sensors, and air-driven assembly tools.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFire Suppression Sensing Lines:\u003c\/strong\u003e Employed in specialized fire suppression systems to route pressure-sensing tubing that triggers the release of clean agents or CO2.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePressure Gauge Mounting:\u003c\/strong\u003e Providing a 90-degree orientation for industrial pressure gauges and sensors on steam headers for easier visual monitoring in industrial plants.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHVAC Control Lines:\u003c\/strong\u003e Routing control air and sensing lines in commercial heating and cooling systems.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eChemical Injection Systems:\u003c\/strong\u003e Building precise metering manifolds for water treatment and chemical dosing applications.\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\u003eMaterial\u003c\/td\u003e\n \u003ctd\u003eHigh-Strength Carbon Steel (ASTM A53)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eFinish\u003c\/td\u003e\n \u003ctd\u003eBlack Oxide Coating\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eNominal Pipe Size\u003c\/td\u003e\n \u003ctd\u003e1\/4\" (NPS)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eAngle\u003c\/td\u003e\n \u003ctd\u003e90°\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eConnection Type\u003c\/td\u003e\n \u003ctd\u003eFemale NPT Threaded\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eWall Schedule\u003c\/td\u003e\n \u003ctd\u003eSchedule 40 (Standard Wall)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePressure Rating\u003c\/td\u003e\n \u003ctd\u003e150 PSI (WOG) \/ 300 PSI (Static)\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; 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 ensure a leak-free installation and maintain NFPA 54 compliance, follow these professional protocols:\u003c\/p\u003e\n\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eUse Proper Sealant:\u003c\/strong\u003e For gas lines, always use yellow PTFE tape or pipe dope rated specifically for hydrocarbons. Regular sealants are not safe for gas applications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTighten Carefully:\u003c\/strong\u003e Because 1\/4\" threads are small, they can strip easily. The industry standard is hand-tight plus 1.5 to 2.5 full turns. Always use a backup wrench on the adjacent pipe fitting to prevent stressing other joints in the assembly.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePrevent Different Metal Contact:\u003c\/strong\u003e Never connect black steel elbows directly to copper or brass without a special joining fitting. Different metals touching can cause rapid rust and pipe failure.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eTest Every Joint:\u003c\/strong\u003e Every joint must be pressure tested with soap solution or a digital leak detector before you use the system. This ensures a complete gas-tight seal.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSupport Connected Pipes:\u003c\/strong\u003e Make sure connected pipes are properly supported to prevent weight and stress on the small elbow fitting.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFollow Local Codes:\u003c\/strong\u003e Always check local building codes for specific requirements in your area before starting any gas or pneumatic installation work.\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\u003eWhat does WOG mean in the pressure rating?\u003c\/strong\u003e\u003cbr\u003e\n WOG stands for Water, Oil, Gas. A rating of 150 PSI WOG means the fitting is safe for use with water, oil, or gas at pressures up to 150 PSI. The 300 PSI static rating applies when the system is not flowing.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eCan I use this elbow for compressed air lines?\u003c\/strong\u003e\u003cbr\u003e\n Yes. This elbow is commonly used for compressed air systems up to 150 PSI. Make sure to use proper thread sealant and test all connections for leaks before putting the system into service.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eWhy is the black finish better than galvanized for gas?\u003c\/strong\u003e\u003cbr\u003e\n Galvanized coating contains zinc that can react with gas chemicals and flake off inside the pipe. These flakes can block small openings in gas equipment. Black steel is chemically stable with natural gas and propane.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eHow tight should I make the connection?\u003c\/strong\u003e\u003cbr\u003e\n Start by hand-tightening until snug. Then use a wrench for 1.5 to 2.5 additional full turns. If you feel strong resistance before reaching this point, stop to avoid stripping the threads. 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