{"product_id":"sigma-813508207-ground-joint-pipe-union-3-4-in-fnpt-150-lb","title":"Sigma 813508207 Ground Joint Pipe Union 3\/4 in Fnpt 150 Lb","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SIGMA 813508207 is a ground joint pipe union designed for threaded pipe assemblies in plumbing, mechanical, and industrial piping systems. Manufactured from malleable iron with a galvanized finish, this union provides a leak-resistant metal-to-metal seat connection that allows sections of pipe to be joined or disconnected without disturbing the rest of the run. Rated at 150 lb, it accepts 3\/4-inch nominal female NPT (FNPT) connections on both ends. Licensed plumbers and pipefitters rely on this type of fitting for gas, water, and steam service in both new construction and retrofit work.\u003c\/p\u003e\u003cp\u003eThis union is suited for residential and light commercial piping applications where a serviceable, reusable connection point is required. Typical installations include gas supply lines, hydronic heating systems, boiler connections, and general plumbing distribution where periodic access for maintenance or equipment replacement is anticipated. The galvanized coating helps resist corrosion in exposed or moderately humid environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eGround joint metal-to-metal seat for reliable, leak-resistant seals\u003c\/li\u003e\n\u003cli\u003e3\/4-inch nominal size with FNPT end connections on both sides\u003c\/li\u003e\n\u003cli\u003e150 lb pressure rating suitable for standard service applications\u003c\/li\u003e\n\u003cli\u003eMalleable iron construction provides strength and impact resistance\u003c\/li\u003e\n\u003cli\u003eGalvanized finish for corrosion protection in exposed installations\u003c\/li\u003e\n\u003cli\u003eAllows pipe runs to be broken and reconnected without cutting or threading\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or standard installation fitting for 3\/4-inch nominal threaded pipe systems rated at 150 lb service class.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed plumber or pipefitter following applicable IPC or IFGC code requirements for the intended service. Shut off the supply line and depressurize the system before disassembling or installing any union fitting. Apply thread sealant or PTFE tape appropriate for the service type to all male NPT threads before assembly. Do not over-tighten the union nut, as excessive force can damage the ground joint seat and compromise the seal.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Size\u003c\/strong\u003e: 3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Style\u003c\/strong\u003e: FNPT (Female National Pipe Thread)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Rating\u003c\/strong\u003e: 150 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Malleable Iron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Galvanized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFigure Number\u003c\/strong\u003e: FIG 3463\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SIGMA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 813508207\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SIGMA","offers":[{"title":"Default Title","offer_id":51524623401266,"sku":"GALU34I-LF","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0211824fb5b74af7a4106487a55dca8e_ced66304-3584-428b-b304-5971e799acc8.jpg?v=1785453300","url":"https:\/\/voomisupply.com\/products\/sigma-813508207-ground-joint-pipe-union-3-4-in-fnpt-150-lb","provider":"Voomi Supply","version":"1.0","type":"link"}