{"product_id":"sigma-810088419-malleable-iron-reducing-coupling-1-5x1-in","title":"Sigma 810088419 Malleable Iron Reducing Coupling 1.5x1 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SIGMA 810088419 is a FIG 3121R malleable iron reducing coupling rated at 150 lb for threaded pipe assemblies. It connects a 1-1\/2 inch nominal pipe to a 1 inch nominal pipe using female NPT (FNPT) threads on both ends. The black oxide finish provides a standard protective coating suited to low-pressure fluid and gas piping systems. Plumbers and pipefitters install this fitting in commercial and residential piping where reducing a pipe run from a larger diameter to a smaller diameter is required without additional adapters.\u003c\/p\u003e\n\u003cp\u003eThis reducing coupling is used in black iron piping systems for natural gas, steam, water, and general plumbing applications. The 150 lb pressure class makes it suitable for low-pressure service lines where standard malleable iron fittings are specified. It is a common component in mechanical rooms, industrial piping, and commercial gas distribution runs where diameter transitions are part of the system design.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eReduces 1-1\/2 inch nominal pipe to 1 inch nominal pipe in a single fitting\u003c\/li\u003e\n  \u003cli\u003eFemale NPT (FNPT) threads on both ends for standard threaded pipe connection\u003c\/li\u003e\n  \u003cli\u003e150 lb pressure class malleable iron construction\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish for corrosion resistance in typical black iron piping applications\u003c\/li\u003e\n  \u003cli\u003eFIG 3121R pattern — a widely recognized malleable iron reducing coupling configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard-service fitting for 150 lb class malleable iron threaded piping systems using NPT connections.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by licensed plumbers or pipefitters. Thread the fitting onto pipe ends using an approved pipe thread sealant or PTFE tape rated for the intended service medium. Always verify that the piping system is fully depressurized and isolated before removing or installing threaded fittings. Installations must comply with applicable local plumbing codes and IFGC requirements when used in gas service.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Size\u003c\/strong\u003e: 1-1\/2 x 1 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Style\u003c\/strong\u003e: FNPT (Female NPT) both ends\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure Class\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 3121R\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 810088419\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SIGMA","offers":[{"title":"Default Title","offer_id":51523389456690,"sku":"BLRED1121I-LF","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f0eabc50583c61a419da8ef4f53862fd_00e611ef-d278-452a-8e73-5a977f5941e6.jpg?v=1785441596","url":"https:\/\/voomisupply.com\/products\/sigma-810088419-malleable-iron-reducing-coupling-1-5x1-in","provider":"Voomi Supply","version":"1.0","type":"link"}