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The B K/MUELLER INDS(IMPORT) 520-754HN is a black reducing tee fitting designed for threaded pipe assemblies in gas and plumbing distribution systems. This fitting transitions from a 1-inch run to a 3/4-inch branch outlet, allowing installers to reduce flow to a secondary line without additional couplings or adapters. Sold in a package of 5 units, it suits service calls and new installations alike. Licensed plumbers and gas fitters working on black iron pipe systems will find this a standard stock item for residential and light commercial rough-in work.
Black reducing tees in this size range are commonly used in natural gas and propane distribution piping, as well as in non-potable water and industrial fluid systems where black iron pipe is specified. The 1-inch by 3/4-inch configuration is a frequent requirement at branch takeoffs supplying appliances, unit heaters, or secondary distribution headers. This fitting is appropriate for above-ground threaded pipe installations per applicable code requirements.
Designed as an OEM-style replacement and standard stock fitting for threaded black iron pipe systems requiring a 1-inch by 3/4-inch reducing tee configuration.
Installation should be performed by a licensed plumber or gas fitter in accordance with applicable local codes, IFGC, or IPC requirements. Shut off and depressurize the supply line completely before disassembling or threading any fittings. Apply an approved thread sealant or PTFE tape rated for the intended service medium to all male threads before assembly. Pressure-test the completed assembly before returning the system to service.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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