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The BMI USA 35277 is a 1-1/4 inch malleable iron black street 45-degree elbow designed for threaded pipe systems in plumbing, gas, and mechanical applications. Street elbows feature a male thread on one end and a female thread on the other, allowing direct connection without a separate nipple. The black finish indicates an oil-coated surface standard for gas distribution and non-potable fluid systems. Licensed plumbers and pipefitters install this fitting in commercial and residential systems where a 45-degree directional change is required on a threaded iron line.
This fitting is suited for low-pressure gas piping, steam, air, and water distribution systems that call for Schedule 40 malleable iron threaded fittings. The street configuration is commonly used in tight-space installations where eliminating an extra coupling or nipple simplifies the run. At 1-1/4 inch, it fits a common main-line pipe size found in residential gas mains and commercial mechanical rooms.
Designed as an OEM-style replacement or new-install fitting compatible with standard 1-1/4 inch NPT threaded malleable iron pipe systems.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes and IFGC or IPC requirements. Shut off gas or fluid supply and depressurize the line before disassembly. Apply an appropriate thread sealant or PTFE tape rated for the service medium to all male threads before assembly. Do not over-tighten; use a pipe wrench with a backup wrench on adjacent fittings to avoid stressing the pipe.
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