B K Mueller 584-035HN Black Steel Pipe Nipple 3/4x3.5 in

Product Description

The B K Mueller Industries 584-035HN is a black steel close-pattern pipe nipple used to make short, threaded connections in gas, air, and water piping systems. At 3/4 inch nominal diameter and 3.5 inches in length, it provides a compact threaded section for joining fittings, valves, and other threaded components. Black steel construction makes it a standard choice for gas distribution lines in both residential and light commercial applications. It is installed by licensed plumbers, pipefitters, and gas service technicians working on threaded iron pipe systems.

This nipple is suited for residential and light commercial piping assemblies where a short, rigid threaded connector is required. Typical applications include natural gas and propane branch lines, compressed air headers, and general black iron piping systems. The 3/4 inch size is one of the most common diameters found in residential gas manifolds, boiler supply connections, and HVAC gas train assemblies. It ships in a package quantity of 15, making it practical for service trucks and shop stock.

Key Features

• Black steel construction suited for gas, air, and water service
• 3/4 inch nominal diameter with standard NPT threads on both ends
• 3.5 inch length provides a compact, rigid connection between fittings
• Available in a package quantity of 15 for stocking convenience
• Compatible with standard threaded black iron fittings and valves

Compatibility

Designed as a standard NPT-threaded black steel nipple for use with 3/4 inch threaded iron pipe fittings, valves, and couplings in gas, air, and water piping systems.

Installation Notes

Installation should be performed by a licensed plumber or gas fitter in accordance with the International Fuel Gas Code (IFGC) or International Plumbing Code (IPC) as applicable. Shut off and verify zero pressure on the gas or fluid supply before threading or unthreading any nipple. Apply an approved thread sealant or PTFE tape rated for the service medium to all NPT joints. Pressure-test the completed assembly before returning the system to service.