{"product_id":"b-k-mueller-521-310hc-black-reducing-coupling-1-4x1-8-25pk","title":"B K Mueller 521-310HC Black Reducing Coupling 1\/4x1\/8 25pk","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe B K Mueller Industries 521-310HC is a black reducing coupling designed to connect pipes or fittings of two different sizes in a threaded piping system. It transitions from a 1\/4-inch connection to a 1\/8-inch connection, making it a practical solution for low-pressure gas, air, or fluid distribution lines where a size change is needed without additional adapters. This coupling ships in a package of 25 units, making it well suited for contractors, service technicians, and supply house stocking. The black finish indicates malleable iron construction, standard for gas and air distribution in trade applications.\u003c\/p\u003e\n\u003cp\u003eThis reducing coupling is used in residential and light commercial piping systems where threaded connections are required. Typical applications include natural gas and propane distribution lines, compressed air systems, and general plumbing rough-in work. Plumbers, pipefitters, and HVAC technicians regularly use fittings of this type when transitioning between pipe sizes at branch connections, meters, or equipment hookups. The pack quantity of 25 supports high-volume service work or contractor inventory replenishment.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eReduces from 1\/4-inch to 1\/8-inch threaded connection\u003c\/li\u003e\n  \u003cli\u003eBlack finish construction typical of malleable iron gas and air fittings\u003c\/li\u003e\n  \u003cli\u003eSold in a pack of 25 units for contractor and stocking use\u003c\/li\u003e\n  \u003cli\u003eThreaded design compatible with standard NPT pipe systems\u003c\/li\u003e\n  \u003cli\u003eCompact reducing coupling eliminates need for separate adapters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and standard fitting for threaded 1\/4-inch to 1\/8-inch NPT piping systems in gas, air, and fluid distribution applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by licensed plumbers, pipefitters, or HVAC technicians following applicable local codes, IFGC, and IPC standards. Shut off the gas or fluid supply and depressurize the line before making or breaking any threaded connections. Apply an approved pipe thread sealant or PTFE tape rated for the specific media being carried. Do not overtighten threaded fittings, as this can crack malleable iron at the threads.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInlet Size\u003c\/strong\u003e: 1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutlet Size\u003c\/strong\u003e: 1\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 25 EA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.06 pounds (package)\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: B K Mueller Industries\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 521-310HC\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SOUTHLAND","offers":[{"title":"Default Title","offer_id":51562120773938,"sku":"521-310HC","price":38.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/daecef3a9cbff73479113146585e7da5.jpg?v=1786471968","url":"https:\/\/voomisupply.com\/products\/b-k-mueller-521-310hc-black-reducing-coupling-1-4x1-8-25pk","provider":"Voomi Supply","version":"1.0","type":"link"}