{"product_id":"bk-521-805bg-malleable-black-iron-pipe-plug-1-in","title":"Bk 521-805BG Malleable Black Iron Pipe Plug 1 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BK 521-805BG is a 1-inch malleable black iron pipe plug designed to seal off threaded pipe ends in plumbing, HVAC, and mechanical piping systems. The fitting is manufactured from black malleable iron meeting ANSI\/ASTM A-197 material standards, with threads conforming to ANSI B1.20.1 for reliable, leak-free engagement. Dimensions comply with ANSI\/ASME B16.14 and B16.39. Each fitting is individually flag tagged and 100% inspected and quality tested before leaving the factory. The Mueller logo is cast into the body of each fitting. At 0.2 pounds, this plug is a standard trade-grade component used by plumbers, pipefitters, and HVAC mechanics on threaded iron pipe assemblies.\u003c\/p\u003e\n\u003cp\u003eThis plug is suited for residential and light commercial applications where a threaded black iron pipe end requires capping during installation, testing, or system modification. Common install scenarios include capping unused branch outlets on gas lines, hydronic heating systems, and general-purpose iron pipe distribution systems. It is sold individually and is compatible with standard NPT threaded pipe and fittings at the 1-inch nominal pipe size.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBlack malleable iron construction per ANSI\/ASTM A-197\u003c\/li\u003e\n  \u003cli\u003eThreads conform to ANSI B1.20.1 for standard NPT engagement\u003c\/li\u003e\n  \u003cli\u003eDimensional compliance with ANSI\/ASME B16.14 and B16.39\u003c\/li\u003e\n  \u003cli\u003e100% inspected and quality tested at the factory\u003c\/li\u003e\n  \u003cli\u003eIndividually flag tagged for easy identification on the job\u003c\/li\u003e\n  \u003cli\u003eMueller logo cast into the body for manufacturer traceability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard NPT threaded replacement or new-installation pipe plug for 1-inch black iron pipe systems in plumbing, gas, and HVAC hydronic applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by a licensed plumber or pipefitter. Shut off and depressurize the pipe system fully before removing or installing any threaded fittings. Apply an appropriate thread sealant or PTFE tape to the male threads before installation. On gas systems, verify all connections with a leak detection solution after pressurizing and follow applicable codes including the IFGC.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Malleable Black Iron\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\u003eThread Standard\u003c\/strong\u003e: ANSI B1.20.1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensional Standard\u003c\/strong\u003e: ANSI\/ASME B16.14, B16.39\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePipe Size\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnit of Measure\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: 521-805BG\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"B\u0026K","offers":[{"title":"Default Title","offer_id":51347547029810,"sku":"521-805BG","price":16.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310549875.jpg?v=1782108154","url":"https:\/\/voomisupply.com\/products\/bk-521-805bg-malleable-black-iron-pipe-plug-1-in","provider":"Voomi Supply","version":"1.0","type":"link"}