Midland Industries 51220 Pipe Nipple 4in Mpt Sch 80 Ss

Product Description

The MIDLAND INDUSTRIES 51220 is a seamless close pipe nipple rated for demanding industrial and commercial piping applications. Manufactured from 304 stainless steel to Schedule 80 wall thickness, it delivers a 3000 psi pressure rating with reliable corrosion resistance. Both ends are threaded 4 in Male Pipe Thread (MPT) conforming to ANSI/ASME B1.20.1 dimensional standards, ensuring proper thread engagement with standard fittings. The close-length configuration minimizes dead space in tight installations. Plumbers, pipefitters, and mechanical contractors install this fitting when a short, rigid threaded connection is required between two female-threaded ports in high-pressure systems.

This nipple is suited for residential and commercial piping systems handling air, water, oil, natural gas, and steam service. Its 304 stainless steel construction makes it appropriate for corrosive or high-temperature environments where carbon steel fittings are not acceptable. Schedule 80 wall thickness provides the additional material strength required in elevated-pressure process lines and utility piping, making it a standard choice for mechanical rooms, industrial skids, and process piping tie-ins.

Key Features

• 304 stainless steel construction for corrosion resistance in wet, chemical, and high-temperature environments
• Schedule 80 wall thickness rated to 3000 psi
• Close-length nipple minimizes overall assembly footprint
• 4 in MPT x 4 in MPT threading per ANSI/ASME B1.20.1
• Compatible with air, water, oil, natural gas, and steam service
• Seamless construction eliminates weld seam inconsistencies

Compatibility

Designed for use in air, water, oil, natural gas, and steam service piping systems. Threads conform to ANSI/ASME B1.20.1 and mate with any standard 4 in female NPT fitting or valve body.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter following applicable IPC or IFGC code requirements for the service medium. Shut off and depressurize the line completely before removing or installing any threaded fitting. Apply a thread sealant or PTFE tape rated for the intended service medium to all male threads before assembly. Do not over-torque stainless steel threads, as galling can occur and may damage both the nipple and mating fitting.