{"product_id":"sigma-811089408-galvanized-reducing-coupling-2x1-in-fnpt-150lb","title":"Sigma 811089408 Galvanized Reducing Coupling 2x1 in Fnpt 150lb","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SIGMA 811089408 is a FIG 3121R malleable iron reducing coupling designed to connect pipe runs of two different diameters in threaded piping systems. Sized at 2 x 1 inches nominal with female national pipe thread (FNPT) ends on both sides, this fitting steps down the line without requiring additional adapters. Rated at 150 lb, it is built for standard-pressure threaded systems. The hot-dip galvanized finish provides corrosion resistance suitable for indoor and outdoor environments where moisture exposure is a concern. Licensed plumbers and pipefitters are the primary installers for this type of fitting.\u003c\/p\u003e\u003cp\u003eThis reducing coupling is used in commercial and industrial piping systems where a pipe size reduction is needed along a threaded run. Typical applications include water distribution lines, low-pressure steam systems, compressed air distribution, and general mechanical piping. The FNPT thread pattern on both ends accepts standard NPT-threaded pipe, making it compatible with common black or galvanized pipe stock available through wholesale supply channels. It is well-suited for maintenance, repair, and new-construction work across light commercial and industrial settings.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReduces from 2 inch nominal to 1 inch nominal in a single fitting\u003c\/li\u003e\n\u003cli\u003eFNPT end style on both sides for connection to standard NPT-threaded pipe\u003c\/li\u003e\n\u003cli\u003e150 lb pressure rating for standard threaded piping service\u003c\/li\u003e\n\u003cli\u003eMalleable iron construction provides impact resistance and thread integrity\u003c\/li\u003e\n\u003cli\u003eGalvanized finish for corrosion protection in wet or outdoor environments\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard-use fitting for 150 lb malleable iron threaded piping systems using NPT-threaded pipe.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed plumber or pipefitter following applicable IPC and IFGC code requirements for the system type. Shut off and depressurize the piping system completely before removing or installing any threaded fittings. Apply an appropriate thread sealant or PTFE tape to the male threads before making up the joint. Do not over-tighten, as malleable iron threads can crack under excessive torque.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Size\u003c\/strong\u003e: 2 x 1 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: Galvanized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFigure Number\u003c\/strong\u003e: FIG 3121R\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: 811089408\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SIGMA","offers":[{"title":"Default Title","offer_id":51524398809394,"sku":"GALRED21I-LF","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f0eabc50583c61a419da8ef4f53862fd_245561b0-3bf6-4e91-85e0-10a32044e62e.jpg?v=1785447960","url":"https:\/\/voomisupply.com\/products\/sigma-811089408-galvanized-reducing-coupling-2x1-in-fnpt-150lb","provider":"Voomi Supply","version":"1.0","type":"link"}