B K Mueller 581-030HN Black Pipe Nipple 1/4 X 3 Inches

Product Description

The B K Mueller Industries 581-030HN is a black steel pipe nipple used to create threaded connections in gas, air, and fluid piping systems. Measuring 0.25 inches nominal diameter by 3 inches in length, this nipple threads into standard fittings on both ends, providing a short, rigid section of pipe between two connection points. Sold in a package of 10 individual pieces, it is well suited for jobs requiring multiple connections. Licensed plumbers, pipefitters, and HVAC technicians commonly install this type of nipple in residential and light commercial systems.

Black steel pipe nipples are a standard component in natural gas and propane distribution piping, as well as in compressed air and certain industrial fluid lines. The 0.25 inch nominal size suits low-volume branch lines and final connections at appliances or equipment. This nipple is appropriate for use where black iron or steel piping is specified and where galvanized components are not required by code or application.

Key Features

• 0.25 inch nominal diameter with 3 inch length for short-run threaded connections
• Black steel construction suitable for gas and air piping applications
• Threaded on both ends for standard NPT fitting compatibility
• Sold in a package of 10 pieces for multi-connection jobs
• Compact form factor fits tight installation spaces

Compatibility

Designed as an OEM-style replacement and standard-supply black steel pipe nipple for use with 0.25 inch NPT threaded fittings in residential and light commercial gas, air, and fluid piping systems.

Installation Notes

Installation is performed by a licensed plumber or pipefitter in accordance with local plumbing and mechanical codes, including the IPC and IFGC where applicable. Shut off the gas or fluid supply and depressurize the line before removing or installing any threaded nipple. Apply appropriate thread sealant or tape rated for the service medium before making up connections. Do not use on systems requiring galvanized or stainless fittings as specified by the design engineer or authority having jurisdiction.