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The BMI USA 35450 is a malleable iron black pipe tee designed for joining and branching threaded pipe runs in gas, air, and water distribution systems. The reducing tee configuration accepts a 1-inch run with a 1/2-inch branch outlet, allowing trade professionals to split or redirect flow without additional fittings. The black finish is standard for gas line applications and is produced without galvanizing, making it compatible with natural gas and propane service where galvanized fittings are not permitted. Plumbers, pipefitters, and HVAC technicians regularly use malleable iron tees in both new construction and retrofit work.
This tee is suited for residential and light commercial piping systems where threaded connections are required. Common applications include gas supply branch lines, compressed air distribution, and general-purpose black iron pipe assemblies. The reducing outlet allows a single tee to serve both the main run and a smaller branch without a separate bushing in many configurations. Its compact size and standard thread pattern make it a go-to fitting for tight mechanical room layouts and gas appliance rough-in work.
Designed as an OEM-style replacement or standard fitting for threaded black iron pipe systems using NPT connections in residential and light commercial gas, air, and water piping applications.
Installation should be performed by a licensed plumber, pipefitter, or qualified HVAC technician in accordance with applicable local codes, IFGC, or IPC requirements. Shut off the gas or water supply and depressurize the line before disassembling any existing fittings. Apply an approved thread sealant or pipe dope rated for the service medium to all NPT threads before assembly. Do not overtighten threaded connections, as malleable iron fittings can crack under excessive force.
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