{"product_id":"bk-521-200hc-malleable-black-iron-coupling-1-8-inch","title":"Bk 521-200HC Malleable Black Iron Coupling 1\/8 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BK 521-200HC is a 1\/8 inch malleable black iron pipe coupling designed for threaded pipe assemblies in plumbing, gas distribution, and mechanical piping systems. Malleable iron construction meets ANSI\/ASTM A-197 material standards, while threads conform to ANSI B1.20.1 for reliable, leak-resistant connections. Dimensions comply with ANSI\/ASME B16.15, B16.14, and B16.39. Each fitting is individually flag tagged for traceability and is 100 percent inspected and quality tested before leaving the facility. Licensed plumbers and pipefitters typically install this fitting in low-pressure gas and water piping systems where a straight, threaded union between two pipe ends is required.\u003c\/p\u003e\n\u003cp\u003eThis coupling is suited for residential and light commercial piping applications including natural gas, propane, steam, and water service lines. The 1\/8 inch thread size targets small-diameter branch lines and instrument connections commonly found in HVAC gas trains, boiler trim, and utility piping. Its compact size and standard thread pattern make it a straightforward drop-in component during new construction or repair work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMalleable black iron construction meets ANSI\/ASTM A-197 material specification\u003c\/li\u003e\n  \u003cli\u003eThreads cut to ANSI B1.20.1 for standard NPT compatibility\u003c\/li\u003e\n  \u003cli\u003eDimensions conform to ANSI\/ASME B16.15, B16.14, and B16.39\u003c\/li\u003e\n  \u003cli\u003e100 percent inspected and quality tested at the factory\u003c\/li\u003e\n  \u003cli\u003eIndividually flag tagged for easy identification and traceability\u003c\/li\u003e\n  \u003cli\u003e1\/8 inch size suits small-diameter branch and instrument piping\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 1\/8 inch NPT threaded pipe systems in plumbing, gas, and mechanical piping applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed plumber or pipefitter in accordance with applicable codes such as the IPC or IFGC. Shut off and depressurize the supply line completely before removing or installing any threaded fitting. Apply an approved thread sealant or PTFE tape to male threads before assembly, and tighten to hand-tight plus the appropriate number of turns for the fitting size per trade practice. Do not over-tighten malleable iron fittings, as this can crack the casting.\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, ANSI\/ASTM A-197\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: ANSI B1.20.1 (NPT)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensional Standard\u003c\/strong\u003e: ANSI\/ASME B16.15, B16.14, B16.39\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePipe Size\u003c\/strong\u003e: 1\/8 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.063 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: 521-200HC\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"B\u0026K","offers":[{"title":"Default Title","offer_id":51347321717042,"sku":"521-200HC","price":21.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310549905.jpg?v=1782101508","url":"https:\/\/voomisupply.com\/products\/bk-521-200hc-malleable-black-iron-coupling-1-8-inch","provider":"Voomi Supply","version":"1.0","type":"link"}