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The ASC Engineered Solutions 310086202 is a black malleable iron reducing coupling designed to connect two pipes of different diameters in threaded piping systems. It transitions from a 3/4-inch female thread to a 3/8-inch female thread, allowing a step-down in pipe size within a run. Weighing 0.25 pounds, this domestically produced fitting is suited for gas, air, and general plumbing distribution lines where a durable, threaded reducing connection is required. Licensed plumbers and pipefitters are the primary installers of this fitting in both new construction and retrofit applications.
This reducing coupling sees use in residential and light commercial piping systems where line sizes change between supply and branch runs. Typical scenarios include natural gas distribution, compressed air lines, and water supply rough-in work. The black finish is standard for gas piping applications. It is installed wherever a threaded reduction from 3/4 inch to 3/8 inch is needed within a piping system.
Designed as an OEM-style replacement or new-install fitting for standard NPT threaded piping systems requiring a 3/4-inch to 3/8-inch reducing connection.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local plumbing and mechanical codes, including IPC and IFGC requirements where relevant. Shut off and depressurize the line before disassembly or installation. Apply appropriate thread sealant or pipe tape to all male NPT threads before making up the joint. Do not overtighten malleable iron fittings, as the material can crack under excessive torque.
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