Bk Mueller 590-060 Black Steel Pipe Nipple 3x6 Sch 40

Product Description

The BK MUELLER 590-060 is a black steel pipe nipple designed for threaded pipe assemblies in gas, water, and industrial piping systems. Manufactured from welded steel with a black finish coating, this nipple measures 3 inches in nominal pipe size and 6 inches in length, built to Schedule 40 wall thickness. The NPT threads conform to ASME B1.20.1 standards, and the pipe itself meets ASTM A733 specifications. Plumbers, pipefitters, and HVAC technicians use this nipple to connect fittings, valves, and other threaded components in both residential and commercial installations.

This nipple is suited for use in natural gas distribution lines, steam systems, compressed air systems, and general plumbing applications where Schedule 40 black steel pipe is the specified material. The 3-inch diameter makes it appropriate for main supply lines and larger branch connections in commercial mechanical rooms, boiler rooms, and industrial piping runs. Installation typically follows IFGC or IPC requirements depending on the service application.

Key Features

• Schedule 40 wall thickness provides standard pressure-rated performance for threaded steel pipe systems
• Welded steel construction meets ASTM A733 specifications
• NPT threads machined to ASME B1.20.1 for reliable, leak-resistant makeup
• Black finish coating suitable for gas and steam service
• 3-inch nominal pipe size x 6-inch length covers common close-to-medium offset connections

Compatibility

Designed as an OEM-style replacement and standard-stock fitting compatible with 3-inch Schedule 40 black steel threaded piping systems using NPT connections per ASME B1.20.1.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified HVAC mechanic. Shut off and depressurize the line before cutting into any existing piping system. Apply an appropriate thread sealant or PTFE tape rated for the service medium before making up the joint. Torque to hand-tight plus the number of turns appropriate for the fitting class per standard threading practice; do not over-tighten welded steel nipples as this can crack fittings or distort threads.