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The BMI USA 10172 is a black steel pipe nipple measuring 1/8 inch in diameter and 12 inches in length. Pipe nipples are short threaded pipe sections used to join fittings, valves, and other components in a piping system. This nipple ships in a black finish, which is standard for gas line and low-pressure steam applications. Plumbers and pipefitters install this type of fitting in residential and light commercial piping systems where a close or extended connection is needed between threaded components.
This nipple is suited for use in natural gas, propane, and steam distribution systems where black iron or black steel fittings are required. It is a common stock item in plumbing and HVAC rough-in work, particularly where local codes call for black steel in gas supply lines. The 12-inch length makes it useful for spanning moderate gaps between valves, tees, and other threaded fittings without the need for a union or additional coupling.
Designed as a standard replacement or new-installation fitting compatible with 1/8-inch NPT threaded pipe fittings, valves, and couplings in black iron piping systems.
Licensed plumbers and pipefitters should install black steel pipe nipples in accordance with applicable local codes, including IFGC requirements for gas piping systems. Shut off the gas supply or system pressure completely before threading or replacing any nipple. Apply an approved thread sealant or pipe tape rated for the intended service medium before making up connections. Inspect threads on both the nipple and mating fittings before assembly to ensure a leak-free joint.
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