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The BK MUELLER 582-001HN is a Schedule 40 black steel pipe nipple used to connect threaded pipe sections in gas, air, and water distribution systems. Sized at 3/8 inch nominal diameter and 1 inch in length, it features standard 3/8 inch NPT threads on both ends and a black finish coating. This short-run nipple is a common fitting in residential and light commercial piping assemblies. Plumbers, pipefitters, and gas technicians install these as close nipples or fill-in connections between valves, fittings, and equipment. The Schedule 40 wall thickness meets standard pressure requirements for typical trade applications.
This nipple is suited for use in gas supply lines, compressed air distribution, and water piping where a short threaded connector is needed. It is commonly found in boiler rooms, mechanical rooms, and utility spaces where black iron pipe systems are standard. The 1 inch overall length makes it appropriate for tight-clearance connections between adjacent fittings or valves.
Designed as a standard Schedule 40 black iron threaded nipple compatible with 3/8 inch NPT fittings, valves, and pipe sections used in residential and commercial gas, air, and water piping systems.
Installation is performed by licensed plumbers or gas fitters following applicable local codes and IFGC or IPC standards. Shut off and depressurize the line before removing or installing any threaded fittings. Apply an approved thread sealant or PTFE tape to male threads before assembly. Do not overtighten threaded connections, as this can crack fittings or damage threads.
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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