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The ASC ENGINEERED SOLUTIONS 810081810 is a 4-inch black malleable iron coupling designed for joining sections of threaded pipe in mechanical and plumbing systems. The black coating provides corrosion resistance suitable for gas distribution, compressed air, and similar industrial piping applications. At 5.58 pounds, this fitting has the mass and wall thickness expected of malleable iron fittings used in demanding trade environments. Licensed plumbers, pipefitters, and mechanical contractors specify malleable iron couplings where strength and reliable thread engagement matter.
This coupling is sized at 4 inches and is suited for use in commercial and industrial piping systems where threaded malleable iron fittings are the standard of construction. Typical install scenarios include gas supply lines, fire suppression drop connections, steam lines at appropriate pressure ratings, and compressed air distribution headers. The black finish distinguishes it from galvanized fittings and is standard for gas piping in many jurisdictions.
Designed as an OEM-style replacement and standard-use fitting compatible with 4-inch threaded malleable iron pipe systems conforming to standard NPT threading specifications.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable mechanical and plumbing codes, including IFGC and IPC requirements where relevant. Shut off all gas, air, or fluid supply and depressurize the system before removing or installing any threaded fittings. Apply thread sealant or PTFE tape appropriate to the service medium before assembly. Do not over-torque threaded connections, as malleable iron threads can be damaged by excessive force.
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