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The ASC ENGINEERED SOLUTIONS 310086806 is a black malleable iron reducing coupling designed to connect pipes of two different diameters in threaded piping systems. At 1 inch by 3/4 inch, it steps down the line size while maintaining a secure, leak-resistant threaded joint. The black coating provides corrosion resistance suited for gas distribution, industrial piping, and similar applications. Plumbers and pipefitters install this fitting in both new construction and retrofit work where pipe size transitions are required in threaded iron systems.
This reducing coupling is appropriate for residential and commercial piping applications, including natural gas supply lines, propane distribution, and general industrial pipe runs where malleable iron fittings are specified. The 1 inch by 3/4 inch size transition is a common step-down configuration encountered in branch lines and appliance connections. Domestic manufacture supports project specifications that require domestically produced fittings.
Designed as an OEM-style replacement or new-install fitting for standard threaded iron pipe systems requiring a 1 inch by 3/4 inch reducing coupling.
Installation is performed by licensed plumbers or pipefitters following applicable codes such as the IPC or IFGC. Shut off gas or fluid supply and depressurize the line before removing or installing any threaded fitting. Apply appropriate thread sealant or PTFE tape rated for the service medium before making up the joint. Do not overtighten malleable iron fittings; use a pipe wrench with steady, controlled torque to seat the threads without cracking the fitting.
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