{"product_id":"bk-mueller-521-341hc-black-reducing-coupling-3-4x1-4","title":"Bk Mueller 521-341HC Black Reducing Coupling 3\/4x1\/4","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BK MUELLER 521-341HC is a black malleable iron reducing coupling rated for Class 150 service and designed to connect a 3\/4-inch pipe to a 1\/4-inch pipe using female iron pipe (FIP) threaded connections on both ends. Rated to 300 psi, this fitting handles both liquid and gas pressure service. The black finish is standard for gas distribution piping and similar industrial applications. It is installed by licensed plumbers, pipefitters, and HVAC technicians working with threaded iron pipe systems in residential, light commercial, and industrial environments.\u003c\/p\u003e\n\u003cp\u003eThis reducing coupling is suited for gas supply lines, water distribution, and compressed air applications where a reduction in pipe size is required between a 3\/4-inch and 1\/4-inch run. The FIP thread standard ensures compatibility with standard NPT-threaded pipe and fittings. It is a common component in gas appliance rough-in work, boiler piping, and mechanical room installations where threaded black iron pipe is specified.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMalleable iron construction for strength and durability in threaded piping systems\u003c\/li\u003e\n  \u003cli\u003eBlack finish standard for gas service piping applications\u003c\/li\u003e\n  \u003cli\u003eClass 150 rated with 300 psi liquid and gas pressure rating\u003c\/li\u003e\n  \u003cli\u003eFemale iron pipe (FIP) threads on both ends for standard NPT compatibility\u003c\/li\u003e\n  \u003cli\u003eReduces from 3\/4 inch to 1\/4 inch in a single compact fitting\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 threaded black iron pipe systems using NPT-compatible fittings in Class 150 service.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by licensed plumbers, pipefitters, or qualified HVAC technicians. Shut off the gas or water supply and depressurize the line before threading any fittings. Apply an approved pipe thread sealant or PTFE tape to male threads before assembly; do not apply sealant to female threads. Verify all connections with a leak test before returning the system to service, following applicable local codes and IFGC requirements for gas piping.\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: 3\/4 x 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\u003c\/strong\u003e: Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: FIP (Female Iron Pipe)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Type\u003c\/strong\u003e: Threaded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure Rating\u003c\/strong\u003e: 300 psi\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClassification\u003c\/strong\u003e: Class 150\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.4 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: 521-341HC\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"B\u0026K MUELLER","offers":[{"title":"Default Title","offer_id":67907467575602,"sku":"521-341HC","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/3840e055c11869610090be0e4043fdcc.jpg?v=1791179561","url":"https:\/\/voomisupply.com\/products\/bk-mueller-521-341hc-black-reducing-coupling-3-4x1-4","provider":"Voomi Supply","version":"1.0","type":"link"}