B K/mueller Inds(import) 581-040HN Black Pipe Nipple

Product Description

The B K/MUELLER INDS(IMPORT) 581-040HN is a black steel pipe nipple measuring 1/4 inch nominal diameter by 4 inches in length. Pipe nipples are short threaded pipe sections used to connect two fittings, valves, or equipment ports in a piping system. This nipple is manufactured from black steel, making it suitable for gas distribution, compressed air, and non-potable water piping applications. Licensed plumbers and gas fitters install this type of fitting as part of rough-in and service work on residential and light commercial systems. The unit ships in a package quantity of 10.

Black steel pipe nipples in this size range are commonly used in residential and commercial gas piping systems, including natural gas and propane supply lines to appliances, burners, and equipment. They also see regular use in industrial compressed air distribution and fire sprinkler systems where black steel is the specified material. The 1/4 inch by 4 inch configuration is a frequently specified size for branch connections, drip legs, and short offset runs between valves and equipment.

Key Features

• Black steel construction suited for gas, compressed air, and non-potable piping service
• 1/4 inch nominal pipe size with 4 inch overall length
• Threaded on both ends for standard NPT fitting connections
• Sold in a package quantity of 10 units
• Compact size well suited for drip legs, branch connections, and short offset runs

Compatibility

Designed as a standard NPT-threaded black steel pipe nipple for use with compatible 1/4 inch black steel or malleable iron fittings, valves, and equipment ports in gas and piping systems.

Installation Notes

Installation should be performed by a licensed plumber or gas fitter in accordance with applicable local codes, the International Fuel Gas Code (IFGC), or the International Plumbing Code (IPC) as relevant to the service. Shut off gas supply or depressurize the piping system completely before removing or installing any threaded fitting. Apply an approved thread sealant or PTFE tape rated for the intended service to all male threads before assembly. Do not over-tighten threaded connections, as this can damage threads or fittings.