Midland Industries 57226 Welded Pipe Nipple 4 in Sch 40

Product Description

The MIDLAND INDUSTRIES 57226 is a Schedule 40 black steel welded pipe nipple used in threaded pipe systems handling gas, steam, or liquid service. It features 4-inch male pipe thread (MPT) on both ends and an overall length of 5.5 inches, with a wall thickness of 0.237 inches and a thread length of 1.74 inches per end. Rated at 150 lb pressure class, this nipple supports working pressures up to 2,210 psi and a temperature range of -200 to 150 degrees F. It is installed by licensed plumbers, pipefitters, and gas service technicians working in commercial and industrial piping systems.

This nipple is suited for black iron pipe assemblies in residential and commercial applications including natural gas distribution, steam lines, and general fluid service. The 4-8 thread count conforms to ANSI B1.20.1 standards, making it a direct fit wherever Schedule 40 threaded steel pipe fittings are specified. The black finish indicates an untreated steel surface appropriate for gas service and dry or low-moisture environments.

Key Features

• 4-inch MPT on both ends - standard threaded connection for Schedule 40 black steel pipe systems
• SCH 40 wall thickness of 0.237 inches rated to 2,210 psi working pressure
• 150 lb pressure class per ANSI B1.20.1 dimensional standards
• Temperature range of -200 to 150 degrees F for broad service compatibility
• Thread count of 4-8 with 1.74-inch thread engagement length per end
• Black steel construction suitable for gas, steam, and general fluid service

Compatibility

Designed as an OEM-style replacement or new-installation fitting for Schedule 40 black steel threaded pipe systems using 4-inch nominal pipe size connections.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with the International Fuel Gas Code (IFGC) or International Plumbing Code (IPC) as applicable. Shut off gas or fluid supply and depressurize the line before removing or installing any fitting. Apply pipe thread sealant or PTFE tape rated for the service type to all male threads before assembly. Do not use impact tools to drive threaded fittings - hand-tighten and finish with a pipe wrench to appropriate engagement without over-torquing.