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The ASC Engineered Solutions 3.BMC is a straight pipe coupling designed for joining threaded pipe sections in gas, water, and general-purpose piping systems. Rated at 150 lb, this coupling features female NPT (FNPT) ends on both sides and is machined from domestic malleable iron with a black finish. It accommodates a 3-inch nominal pipe size, making it a common choice for larger-diameter runs in commercial and industrial piping applications. Licensed plumbers, pipefitters, and mechanical contractors typically install this fitting as part of threaded black iron assemblies.
This coupling is suited for residential and commercial piping systems where threaded black iron pipe is specified, including natural gas distribution lines, steam systems, and general industrial fluid transport. The 3-inch nominal size is frequently encountered in main trunk lines, boiler supply and return runs, and larger-capacity gas headers. Domestic manufacture supports projects requiring U.S.-made components for compliance with project specifications or procurement requirements.
Designed as an OEM-style threaded fitting compatible with standard 3-inch nominal black iron pipe systems using NPT threading per ANSI/ASME B1.20.1.
Installation of black iron threaded fittings should be performed by a licensed plumber or pipefitter in accordance with applicable codes, including the International Fuel Gas Code (IFGC) or International Plumbing Code (IPC) as required by jurisdiction. Shut off and depressurize the piping system completely before disassembling or installing any threaded fitting. Apply an appropriate thread sealant or PTFE tape rated for the intended service medium before making up the joint. Inspect threads on both the fitting and the pipe for damage before assembly.
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