{"product_id":"sigma-810081208-fig-3121-pipe-coupling-2-in-fnpt-150-lb","title":"Sigma 810081208 Fig 3121 Pipe Coupling 2 in Fnpt 150 Lb","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SIGMA 810081208 is a FIG 3121 malleable iron pipe coupling designed for threaded pipe assemblies in plumbing, mechanical, and industrial piping systems. Sized at 2 inches nominal with female NPT (FNPT) threads on both ends, this coupling connects two sections of pipe in a straight run. It carries a 150 lb pressure rating and features a black oxide finish that provides basic corrosion resistance for interior and dry-location applications. Licensed plumbers and pipefitters are the primary installers in both residential and light commercial work.\u003c\/p\u003e\u003cp\u003eThis coupling is suited for use in low-pressure steam, water, and gas distribution piping where malleable iron fittings are specified. The FNPT end style accepts standard tapered pipe threads, making it compatible with common black iron pipe systems used in natural gas supply lines, fire protection branch lines, and general mechanical piping. The black oxide finish is standard for black iron pipe assemblies in interior applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e2 inch nominal size with FNPT threads on both ends for straight-run pipe connections\u003c\/li\u003e\n\u003cli\u003e150 lb pressure class rated malleable iron construction\u003c\/li\u003e\n\u003cli\u003eBlack oxide finish standard for black iron pipe systems\u003c\/li\u003e\n\u003cli\u003eFIG 3121 pattern for consistent thread engagement and sealing\u003c\/li\u003e\n\u003cli\u003eCompatible with standard NPT-threaded black iron pipe\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation fitting for 2 inch NPT threaded malleable iron pipe systems rated at 150 lb class.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a licensed plumber or pipefitter following applicable IPC or IFGC requirements for the service intended. Shut off and depressurize the pipe system completely before disassembling any threaded connections. Apply an appropriate thread sealant or PTFE tape to the male threads before assembly. Do not exceed the 150 lb pressure class rating of this fitting.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Size\u003c\/strong\u003e: 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Style\u003c\/strong\u003e: FNPT (Female National Pipe Thread) both ends\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: Black Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFigure Number\u003c\/strong\u003e: FIG 3121\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: 810081208\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SIGMA","offers":[{"title":"Default Title","offer_id":51524362469682,"sku":"BLCOUP2I-LF","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c6a7f4f8199367590c1f454891c461c1_8c738746-1ad9-4d88-8b8f-c98e2d78f062.jpg?v=1785446983","url":"https:\/\/voomisupply.com\/products\/sigma-810081208-fig-3121-pipe-coupling-2-in-fnpt-150-lb","provider":"Voomi Supply","version":"1.0","type":"link"}