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The BMI USA 10789 is a black steel pipe nipple designed for use in threaded piping systems across plumbing, gas, and mechanical applications. This single-run nipple measures 1-1/4 inches in diameter and 6 inches in length, providing a reliable close-length connection between fittings, valves, or other threaded components. The black finish indicates an uncoated steel construction typical of Schedule 40 black iron pipe nipples used in gas distribution and industrial piping. Licensed plumbers and pipefitters are the primary installers for this type of fitting.
This nipple is suited for residential and light commercial piping installations where a 1-1/4-inch threaded connection is required at a 6-inch run length. Common applications include natural gas supply lines, steam systems, and general mechanical piping where black steel is the code-appropriate or preferred material. The single-run configuration means the nipple is one continuous unthreaded body with threaded ends, as opposed to a close or hex nipple.
Designed as an OEM-style replacement or standard supply fitting compatible with 1-1/4 inch NPT threaded black iron pipe systems in residential and commercial plumbing and gas piping applications.
Installation of black steel pipe nipples in gas piping systems must be performed by a licensed plumber or gas fitter in accordance with applicable local codes and the International Fuel Gas Code (IFGC). Shut off the gas supply and verify pressure is relieved before removing or installing any threaded gas fitting. Apply an appropriate thread sealant or pipe-thread compound rated for gas service to all male threads before assembly. Do not use open-flame tools near gas lines during installation.
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