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The ASC Engineered Solutions 1DX1B.BMC is a malleable iron pipe reducing coupling designed to connect pipes of two different nominal sizes in threaded piping systems. It transitions from a 1-1/2 inch nominal female pipe thread to a 1-1/4 inch nominal female pipe thread, rated at 150 lb working pressure. The black finish is standard for gas distribution, compressed air, and similar non-potable fluid applications. Licensed plumbers and pipefitters install this fitting in both residential and light commercial systems where a reduction in pipe diameter is required at a threaded joint.
This reducing coupling is suited for use in gas supply lines, compressed air distribution, fire suppression systems, and general industrial piping where malleable iron fittings meet the project specification. The FNPT end style accepts standard NPT-threaded pipe on both ends, making it compatible with common black iron pipe assemblies used in mechanical rooms, boiler rooms, and utility piping runs. It is domestically manufactured, which satisfies Buy American requirements on applicable public-sector projects.
Designed as an OEM-style replacement and standard-stock fitting for 150 lb malleable iron threaded piping systems using 1-1/2 inch and 1-1/4 inch nominal black iron pipe.
Installation is performed by licensed plumbers or pipefitters in accordance with applicable mechanical and fuel gas codes, including the IFGC and IPC where required. Shut off and depressurize the piping system completely before removing or installing any threaded fitting. Apply an appropriate thread sealant or PTFE tape rated for the intended service medium to all NPT threads prior to assembly. Do not over-tighten; follow standard wrench-tightening practice for malleable iron fittings to avoid cracking the fitting body.
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