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The BMI USA 35012 is a 4-inch black malleable iron pipe coupling designed for joining sections of pipe in plumbing, mechanical, and industrial piping systems. Malleable iron construction provides the strength and ductility needed to handle the mechanical stress common in commercial and industrial installations. The black finish is standard for use in gas distribution and fire protection piping where galvanized fittings are not required. Licensed plumbers, pipefitters, and mechanical contractors install this fitting as part of threaded piping assemblies.
This coupling is suited for use in commercial and industrial piping systems where a reliable, threaded pipe connection is needed. Typical applications include gas supply lines, compressed air systems, and general-purpose mechanical piping. The 4-inch size serves larger-diameter runs common in commercial mechanical rooms, industrial process lines, and fire suppression infrastructure. Installation follows standard threaded pipe assembly practices per applicable codes.
Designed as an OEM-style replacement or new-installation fitting for 4-inch threaded malleable iron piping systems in commercial and industrial applications.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes and the International Fuel Gas Code or International Plumbing Code as relevant to the service. Shut off and depressurize the piping system completely before disassembling any threaded connections. Apply appropriate thread sealant or PTFE tape rated for the intended service medium before making up threaded joints. Do not over-torque fittings, and verify system pressure integrity after installation.
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