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The BK MUELLER 510-505HC is a malleable iron 45-degree street elbow designed for threaded pipe assemblies in plumbing, gas distribution, and industrial piping systems. One end is male-threaded and the other is female-threaded, allowing it to connect directly to a fitting without a nipple. Rated at 300 psi for liquid and gas service and 150 psi for steam, this Class 150 fitting handles demanding pressure conditions. The galvanized finish provides corrosion resistance for above-ground and exposed installations. It fits 1-inch pipe and weighs 1.5 pounds.
This fitting is used in residential and commercial plumbing, natural gas supply lines, compressed air systems, and steam distribution where a 45-degree directional change is needed. The street configuration makes it well suited for tight spaces or retrofit work where adding a nipple between fittings is not practical. Licensed plumbers and pipefitters install this type of fitting in new construction and maintenance applications across a wide range of piping layouts.
Designed as an OEM-style replacement or new-installation fitting for 1-inch threaded malleable iron pipe systems rated for liquid, gas, or low-pressure steam service.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes, including the IPC and IFGC where gas service is involved. Shut off the water or gas supply and depressurize the line completely before disassembling any fittings. Apply an appropriate thread sealant or PTFE tape to the male threads before assembly and tighten to hand-tight plus the number of turns appropriate for the pipe size per code. Do not over-torque malleable iron fittings, as the material can crack under excessive force.
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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