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The BMI USA 35417 is a malleable iron black pipe tee used to create branch connections in threaded pipe systems. It features a reducing outlet, with 3/8-inch run ports and a 1/4-inch branch port, making it well suited for low-pressure gas, air, or fluid distribution lines where a directional split or feed tap is needed. The black finish is applied over malleable iron construction, which offers the ductility and thread-holding strength that trade professionals rely on in tight quarters or vibration-prone installations. Licensed plumbers and pipefitters are the primary installers for this type of fitting.
This tee is commonly used in residential and light commercial piping applications, including natural gas supply lines, compressed air distribution, and steam or water systems that call for NPT-threaded fittings. The reducing branch configuration allows a main run to remain at 3/8-inch pipe size while tapping off to a smaller 1/4-inch line, which is a frequent layout requirement when feeding secondary appliances or instrumentation ports.
Designed as a standard NPT-threaded malleable iron pipe fitting for use in threaded piping assemblies requiring a 3/8-inch x 3/8-inch x 1/4-inch tee configuration.
Installation is typically performed by a licensed plumber or pipefitter following applicable IPC or IFGC code requirements for the intended service. Shut off and depressurize the line before disassembling or threading any fitting. Apply an appropriate thread sealant or PTFE tape to all male NPT threads before assembly. Do not overtighten malleable iron fittings, as the material can crack under excessive torque.
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