Midland Industries 56229 Galvanized Pipe Nipple 4in Sch 40

Product Description

The MIDLAND INDUSTRIES 56229 is a Schedule 40 galvanized steel welded pipe nipple designed for threaded pipe assemblies in plumbing, industrial, and mechanical piping systems. It features 4-inch male pipe thread (MPT) connections on both ends with an overall length of 8 inches and a wall thickness of 0.237 inches. The galvanized steel construction resists corrosion in both wet and dry environments. Rated to 2,210 psi and compatible with temperatures from -150 to 200 degrees F, this nipple suits demanding service conditions. Licensed plumbers and pipefitters install this fitting where a short, rigid threaded connection is required between two female-threaded fittings or valves.

This nipple is intended for use in residential and commercial water supply, gas distribution (where approved), and industrial fluid-handling piping. It is commonly installed in horizontal or vertical runs where a close or short extension nipple is needed between threaded components. The Schedule 40 wall rating makes it appropriate for standard-pressure municipal water supply lines and mechanical room piping. Thread engagement depth is 1.74 inches per end, conforming to ANSI B1.20.1 dimensional standards.

Key Features

• Galvanized steel construction provides corrosion resistance in wet service environments
• Schedule 40 wall thickness of 0.237 inches rated to 2,210 psi working pressure
• 4-inch MPT on both ends with 1.74-inch thread length per ANSI B1.20.1
• Temperature range of -150 to 200 degrees F suits a wide range of service conditions
• Welded steel body for consistent wall integrity along the full length

Compatibility

Designed as an OEM-style replacement or new-install fitting for Schedule 40 threaded galvanized steel pipe systems using 4-inch female pipe thread (FPT) connections.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable IPC or local mechanical codes. Shut off and depressurize the supply line completely before removing or installing any threaded fittings. Apply appropriate thread sealant or PTFE tape to the male threads before makeup. Do not overtighten; use a pipe wrench with a backup wrench on adjacent fittings to avoid stress on connected components.