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The ASC Engineered Solutions 810056606 is a black malleable iron reducing tee designed for threaded pipe systems in commercial and industrial plumbing, mechanical, and fire protection applications. This fitting transitions a 4-inch main run down to a 3-inch branch outlet, allowing flow to be directed or divided across different pipe sizes within the same system. At 9.25 pounds, the malleable iron construction delivers the structural durability and thread integrity that heavy-duty piping installations demand. Licensed plumbers and pipefitters rely on this class of fitting for gas distribution, hydronic heating, and steam systems where material strength is non-negotiable.
This reducing tee is suited for use in residential, commercial, and light industrial piping systems wherever a 4-inch main line requires a 3-inch branch takeoff. Typical installations include boiler room piping, mechanical room distribution headers, fire suppression mains, and industrial process lines. The black coating distinguishes it from galvanized fittings and is standard in gas piping and many hydronic applications. Its threaded connections are compatible with standard tapered pipe threads, making it straightforward to incorporate into new construction or retrofit work.
Designed as an OEM-style replacement or new-installation fitting for threaded malleable iron pipe systems requiring a 4-inch by 3-inch reducing tee configuration.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable codes such as the IPC or IFGC depending on the service. Shut off and depressurize the pipe system completely before cutting in or replacing any threaded fitting. Apply an approved thread sealant or PTFE tape to all male threads before assembly, and tighten to a secure fit using pipe wrenches sized for the pipe diameter. Do not over-torque threaded connections, as this can crack fittings or damage threads.
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