{"product_id":"b-k-mueller-indsimport-521-343hn-black-reducing-coupling","title":"B K\/mueller Inds(import) 521-343HN Black Reducing Coupling","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe B K\/MUELLER INDS(IMPORT) 521-343HN is a black reducing coupling designed to connect pipe runs where a transition from a larger diameter to a smaller diameter is required. This fitting accepts a 3\/4-inch inlet and reduces to a 1\/2-inch outlet, making it a standard component in black iron pipe assemblies used for gas distribution and related piping systems. The fitting is supplied in a package quantity of 15 units, making it practical for service contractors and wholesale trade buyers who work multiple jobs at a time. Licensed plumbers and gas fitters are the primary installers for this type of fitting.\u003c\/p\u003e\u003cp\u003eThis reducing coupling is suited for residential and light commercial applications where black iron pipe is the specified material. Common install scenarios include natural gas supply lines, propane distribution systems, and similar piping configurations where threaded black iron fittings are code-required or preferred. The 3\/4-inch by 1\/2-inch size is one of the most frequently encountered reducing combinations in residential gas rough-in work.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eReduces from 3\/4 inch to 1\/2 inch for common pipe transition needs\u003c\/li\u003e\n\u003cli\u003eBlack iron construction suited for gas piping applications\u003c\/li\u003e\n\u003cli\u003eThreaded fitting for standard black iron pipe assembly\u003c\/li\u003e\n\u003cli\u003eSold in a package of 15 units for multi-job efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard-stock fitting compatible with 3\/4-inch by 1\/2-inch threaded black iron pipe systems.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis fitting is typically installed by a licensed plumber or gas fitter in accordance with local mechanical and fuel-gas codes, including the IFGC where adopted. Shut off and verify gas supply is at zero pressure before disassembling or assembling threaded gas fittings. Use an approved pipe thread sealant or PTFE tape rated for gas service on all threaded connections. Do not over-tighten; follow applicable code requirements for joint integrity and leak testing after installation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Size\u003c\/strong\u003e: 3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Size\u003c\/strong\u003e: 1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 3.65 pounds (package of 15)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 15\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: EA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: B K\/MUELLER INDS(IMPORT)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 521-343HN\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SOUTHLAND","offers":[{"title":"Default Title","offer_id":51559531544882,"sku":"521-343HN","price":28.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/faeab08b7254e3d713a5ec56572e97cb_c2826e90-141b-4167-87e8-57b257b983df.jpg?v=1786434685","url":"https:\/\/voomisupply.com\/products\/b-k-mueller-indsimport-521-343hn-black-reducing-coupling","provider":"Voomi Supply","version":"1.0","type":"link"}