Bk Mueller 584-001HN Black Steel Pipe Nipple Sch 40

Product Description

The BK MUELLER 584-001HN is a black steel close nipple used for joining threaded pipe sections in gas, oil, and industrial piping systems. It is manufactured to Schedule 40 wall thickness with a 3/4-inch nominal pipe size and a 1-3/8-inch body length. The black finish results from an iron oxide coating applied during manufacturing, which provides a degree of corrosion resistance suitable for dry-service gas lines and interior applications. Plumbers, pipefitters, and HVAC technicians use this nipple to connect valves, fittings, tees, and couplings in low-pressure threaded piping assemblies.

This nipple is a standard component in residential and light commercial gas distribution systems, including natural gas and propane supply lines to furnaces, boilers, water heaters, and cooking appliances. It is also used in oil piping, compressed-air lines, and general industrial plumbing where NPT-threaded Schedule 40 steel pipe is specified. The compact 1-3/8-inch length suits tight clearance installations where a close nipple is required to minimize the gap between fittings.

Key Features

• Schedule 40 wall thickness for standard-service threaded piping applications
• 3/4-inch nominal pipe size with 3/4-inch NPT threads on both ends
• 1-3/8-inch overall length suited for close-quarter fitting connections
• Black iron oxide finish appropriate for interior gas and oil service
• Steel construction provides the strength and rigidity required for pressure piping systems

Compatibility

Designed as an OEM-style replacement or stock component for Schedule 40 threaded steel piping systems using 3/4-inch NPT connections in gas, oil, or industrial plumbing applications.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable codes such as the International Fuel Gas Code (IFGC) or International Plumbing Code (IPC). Shut off and depressurize the gas or fluid supply before disassembling any threaded connections. Apply an approved thread sealant or PTFE tape rated for the service medium to all male threads before assembly. Do not over-tighten threaded connections, as this can crack fittings or distort threads.