{"product_id":"sigma-811085406-malleable-iron-reducing-coupling-1-2x3-8-fnpt","title":"Sigma 811085406 Malleable Iron Reducing Coupling 1\/2x3\/8 Fnpt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SIGMA 811085406 is a FIG 3121R malleable iron reducing coupling rated for 150 lb service. It connects a 1\/2-inch nominal pipe to a 3\/8-inch nominal pipe using female National Pipe Taper (FNPT) threads on both ends. The galvanized finish provides corrosion resistance for use in standard gas, air, and water piping systems. Plumbers and pipefitters install this fitting in low-pressure distribution runs where a reduction in pipe diameter is required. It is manufactured from malleable iron, which offers the toughness needed to withstand field installation torque and vibration over the service life of the system.\u003c\/p\u003e\n\u003cp\u003eThis reducing coupling is suited for residential and light commercial piping applications including water supply, compressed air distribution, and gas supply lines where a 1\/2-inch to 3\/8-inch diameter transition is needed. The FNPT threaded ends make it compatible with standard NPT-threaded pipe and fittings. The galvanized coating makes it appropriate for exposed or semi-exposed indoor installations where moisture is a factor.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/2 x 3\/8 inch nominal reducing connection for same-run diameter transitions\u003c\/li\u003e\n  \u003cli\u003eFNPT threads on both ends for standard NPT pipe compatibility\u003c\/li\u003e\n  \u003cli\u003e150 lb pressure rating suitable for low-pressure piping service\u003c\/li\u003e\n  \u003cli\u003eMalleable iron construction resists cracking and handles installation torque\u003c\/li\u003e\n  \u003cli\u003eGalvanized finish provides corrosion resistance in moisture-prone environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation fitting for standard 150 lb malleable iron threaded piping systems using 1\/2-inch to 3\/8-inch NPT connections.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed plumber or pipefitter in accordance with applicable codes including the IPC and IFGC. Shut off and depressurize the line before removing or installing any threaded fittings. Apply an approved thread sealant or PTFE tape to the male threads before assembly. Do not over-torque the fitting, as malleable iron threads can crack under excessive force.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFigure Number\u003c\/strong\u003e: FIG 3121R\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Size\u003c\/strong\u003e: 1\/2 x 3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Style\u003c\/strong\u003e: FNPT (Female National Pipe Taper)\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\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: 811085406\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SIGMA","offers":[{"title":"Default Title","offer_id":51524791861554,"sku":"GALRED1238I-LF","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f0eabc50583c61a419da8ef4f53862fd_fe6048f4-79b0-42ba-b82a-aff7b33d8081.jpg?v=1785457667","url":"https:\/\/voomisupply.com\/products\/sigma-811085406-malleable-iron-reducing-coupling-1-2x3-8-fnpt","provider":"Voomi Supply","version":"1.0","type":"link"}