{"product_id":"bk-521-964bg-black-iron-hex-bushing-1-1-4-x-3-4-in","title":"Bk 521-964BG Black Iron Hex Bushing 1-1\/4 X 3\/4 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BK 521-964BG is a black malleable iron hex bushing used to reduce pipe thread sizes in black iron piping systems. It transitions a 1-1\/4 inch male NPT thread down to a 3\/4 inch female NPT thread, making it a standard reducing fitting for gas, air, and general fluid piping. Plumbers and pipefitters install this type of bushing when connecting a larger-diameter pipe to a smaller-diameter fitting or valve. The hexagonal body allows for wrench engagement during installation. Each unit is individually flag tagged and 100% inspected and quality tested before leaving the factory.\u003c\/p\u003e\n\u003cp\u003eThis hex bushing is suited for residential and light commercial piping applications including natural gas lines, propane distribution, compressed air systems, and water piping where black iron fittings are specified. It is a standard reducing bushing used wherever a 1-1\/4 inch line must transition to a 3\/4 inch threaded connection. The Mueller logo is cast into the body of each fitting, consistent with BK line production standards.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBlack malleable iron construction meeting ANSI\/ASTM A-197 material specification\u003c\/li\u003e\n  \u003cli\u003e1-1\/4 inch male NPT thread x 3\/4 inch female NPT thread reducing configuration\u003c\/li\u003e\n  \u003cli\u003eHex body design for secure wrench grip during installation\u003c\/li\u003e\n  \u003cli\u003eThreads conform to ANSI B1.20.1 for reliable, leak-resistant engagement\u003c\/li\u003e\n  \u003cli\u003eDimensions meet ANSI\/ASME B16.3, B16.14, and B16.39 standards\u003c\/li\u003e\n  \u003cli\u003e100% inspected and quality tested; individually flag tagged\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 black iron threaded pipe systems using 1-1\/4 inch to 3\/4 inch NPT reducing connections.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation of black iron pipe fittings should be performed by a licensed plumber or pipefitter in accordance with applicable codes such as the IFGC or IPC. Apply an approved pipe thread sealant or PTFE tape rated for the intended service before threading the bushing into the female fitting. Use a pipe wrench on the hex body and do not overtighten, as malleable iron fittings can crack under excessive force. Shut off and depressurize the line completely before beginning any fitting replacement or new installation work.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Black Malleable Iron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMale Thread Size\u003c\/strong\u003e: 1-1\/4 inches NPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFemale Thread Size\u003c\/strong\u003e: 3\/4 inches NPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: ANSI B1.20.1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Standard\u003c\/strong\u003e: ANSI\/ASTM A-197\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimension Standards\u003c\/strong\u003e: ANSI\/ASME B16.3, B16.14, B16.39\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.371 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSold As\u003c\/strong\u003e: Each\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 521-964BG\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"B\u0026K","offers":[{"title":"Default Title","offer_id":51344786653490,"sku":"521-964BG","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310549887.jpg?v=1782043657","url":"https:\/\/voomisupply.com\/products\/bk-521-964bg-black-iron-hex-bushing-1-1-4-x-3-4-in","provider":"Voomi Supply","version":"1.0","type":"link"}