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The ASC Engineered Solutions 8700133153 is a 3/4 inch malleable black iron pipe coupling designed to connect two same-direction pipe runs in a straight, continuous line. Malleable iron construction delivers the tensile strength needed for demanding mechanical and piping systems. The black iron finish makes this coupling a standard choice for gas distribution, steam, and industrial fluid piping applications. Licensed plumbers, pipefitters, and mechanical contractors install this type of fitting as part of threaded pipe assemblies where reliable, rigid joining is required.
This coupling is suited for residential and commercial piping systems where threaded black iron connections are specified. Common applications include natural gas supply lines, low-pressure steam systems, and industrial water or air distribution networks. It is sold individually and is compatible with standard 3/4 inch NPT threaded pipe, making it straightforward to source alongside other malleable iron fittings in the same system.
Designed as an OEM-style replacement and standard-use fitting for threaded black iron pipe systems using 3/4 inch NPT connections.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable codes such as the International Plumbing Code or International Fuel Gas Code. Shut off the gas or fluid supply and depressurize the line before removing or installing any threaded fittings. Apply a listed pipe thread sealant or PTFE tape to male threads before assembly. Do not overtighten; use a pipe wrench with a backup wrench on the adjacent fitting or pipe to prevent stress on existing joints.
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