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The ASC Engineered Solutions 300058005 is a black cast iron reducing tee designed for threaded pipe systems in commercial and residential plumbing, gas distribution, and mechanical piping applications. This fitting transitions a 3-inch main run down to a 2.5-inch branch outlet, making it a standard component wherever a line reduction is needed at a tee junction. It ships ready to thread onto standard black iron pipe and is built to the dimensional tolerances expected by plumbing and pipefitting professionals. The black coating provides corrosion resistance suited for dry or low-moisture interior environments.
This reducing tee is used in gas supply piping, compressed air distribution, steam systems, and general industrial pipe networks where cast iron fittings are specified. Its reducing configuration handles the common task of stepping down branch pipe size without requiring an additional bushing or coupling. Pipefitters, plumbers, and mechanical contractors typically install this fitting in above-ground interior applications in both new construction and retrofit projects.
Designed as an OEM-style replacement or new-installation fitting for standard threaded black iron pipe systems requiring a 3-inch by 2.5-inch reducing tee connection.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable codes such as the International Fuel Gas Code or International Plumbing Code. Shut off and depressurize the pipe system completely before cutting in or replacing any fitting. Apply listed thread sealant or tape to all male threads per the sealant manufacturer instructions and applicable code requirements. Do not overtighten threaded cast iron fittings, as the material does not flex and can crack under excessive torque.
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