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The BMI USA 35439 is a malleable iron pipe tee used to create branch connections in threaded pipe systems. It connects a 1-inch run on both ends with a 3/8-inch branch outlet, making it a reducing tee suited for gas, water, and general plumbing distribution lines. The black finish indicates this fitting is intended for gas piping applications, as black malleable iron is a standard material in low-pressure gas distribution work. Licensed plumbers and pipefitters install this fitting using standard NPT threading procedures.
This tee is used in residential and light commercial piping systems where a branch takeoff is needed at a smaller diameter than the main run. Common applications include natural gas supply lines, propane distribution, compressed air systems, and general black iron pipe assemblies. The reducing configuration allows installers to step down from a 1-inch main line to a 3/8-inch branch without additional bushings or adapters.
Designed as a standard NPT-threaded malleable iron reducing tee for use with 1-inch and 3/8-inch schedule 40 black iron pipe in gas, plumbing, and compressed air piping systems.
This fitting is installed by licensed plumbers or pipefitters working on threaded iron pipe systems. Shut off gas or water supply and verify zero pressure before disassembling any existing piping. Apply listed pipe thread sealant or PTFE tape rated for the intended service to all threaded joints before assembly. Gas piping installations must comply with IFGC requirements and be pressure-tested and inspected before returning the system to service.
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