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The ASC ENGINEERED SOLUTIONS 310055603 is a black malleable iron reducing tee designed for threaded pipe assemblies in commercial and industrial piping systems. This domestically manufactured fitting measures 3 inches on the run with 2.5-inch branch and outlet connections, making it a standard reducing tee configuration used where pipe size transitions are needed within a line. The black coating provides corrosion resistance suitable for gas distribution, steam, and general plumbing applications. At 5.80 pounds, this is a substantial fitting built to handle the mechanical demands of high-pressure threaded systems. Licensed plumbers and pipefitters are the primary installers of this type of hardware.
This reducing tee is suited for residential and commercial applications involving black iron pipe runs, including natural gas supply lines, compressed air systems, and steam distribution. The 3-inch run by 2.5-inch branch configuration allows for a controlled reduction in flow path diameter at a branch point without requiring additional bushings or adapters in many installations. It is commonly used in mechanical rooms, boiler rooms, and industrial piping layouts where malleable iron fittings are specified.
Designed as an OEM-style replacement or new-installation fitting for threaded black iron pipe systems using standard NPT connections in 3-inch and 2.5-inch pipe sizes.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes and standards such as the IPC or IFGC where gas service is involved. Shut off all gas or fluid supply and depressurize the line fully before disassembling or assembling threaded connections. Apply appropriate thread sealant or PTFE tape to all male threads before making up connections. Do not over-tighten threaded fittings, as malleable iron can crack if excessive force is applied.
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