{"product_id":"bk-mueller-511-376hn-malleable-iron-reducing-coupling","title":"Bk Mueller 511-376HN Malleable Iron Reducing Coupling","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BK MUELLER 511-376HN is a malleable iron reducing coupling designed to connect threaded pipe of two different diameters in a single inline fitting. It transitions from a 1-1\/2-inch pipe to a 1-1\/4-inch pipe using standard threaded end connections. Rated at 300 psi for liquid and gas service and 150 psi for steam, this Class 150 fitting is built for demanding mechanical systems. A galvanized finish provides corrosion resistance in wet or exposed environments. It is installed by licensed plumbers and pipefitters working on gas distribution, water supply, and steam piping systems.\u003c\/p\u003e\n\u003cp\u003eThis reducing coupling is suited for residential and light commercial applications where a pipe run must be reduced in size between two threaded sections. Typical installations include natural gas branch lines, water distribution piping, compressed air systems, and low-pressure steam lines. The threaded connection style makes it compatible with standard NPT pipe threads, allowing straightforward installation without welding or specialized tooling.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eReduces from 1-1\/2-inch to 1-1\/4-inch pipe in a single inline fitting\u003c\/li\u003e\n  \u003cli\u003eRated 300 psi for liquid and gas service\u003c\/li\u003e\n  \u003cli\u003eRated 150 psi for steam service\u003c\/li\u003e\n  \u003cli\u003eClass 150 malleable iron construction for durability and machinability\u003c\/li\u003e\n  \u003cli\u003eGalvanized finish for corrosion resistance in wet or exposed environments\u003c\/li\u003e\n  \u003cli\u003eThreaded end connections for tool-only installation without welding\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 Class 150 malleable iron threaded piping systems carrying liquid, gas, or low-pressure steam.\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 such as the IPC or IFGC. Shut off and depressurize the line before threading or removing any fitting. Apply an approved pipe thread sealant or PTFE tape to male threads before assembly. Do not overtighten; hand-snug plus wrench turns appropriate to the pipe size is standard practice.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitting Type\u003c\/strong\u003e: Reducing Coupling\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitting Size\u003c\/strong\u003e: 1-1\/2 x 1-1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Malleable Iron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish Coating\u003c\/strong\u003e: Galvanized\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Connection\u003c\/strong\u003e: Threaded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass\u003c\/strong\u003e: 150\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLiquid and Gas Pressure Rating\u003c\/strong\u003e: 300 psi\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSteam Pressure Rating\u003c\/strong\u003e: 150 psi\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.5 pounds\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: BK MUELLER\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 511-376HN\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"B\u0026K MUELLER","offers":[{"title":"Default Title","offer_id":67907282075954,"sku":"511-376HN","price":42.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/63951ad70993ae635d22b99d1a1c17ab.jpg?v=1791176471","url":"https:\/\/voomisupply.com\/products\/bk-mueller-511-376hn-malleable-iron-reducing-coupling","provider":"Voomi Supply","version":"1.0","type":"link"}