Midland Industries 59043SMLS Seamless Pipe Nipple Sch 80

Product Description

The MIDLAND INDUSTRIES 59043SMLS is a seamless Schedule 80 black steel pipe nipple designed for threaded pipe assemblies in gas, industrial, and plumbing applications. It measures 2.5 inches in length with male pipe thread (MPT) connections on both ends, sized at 3/8 inch. The SCH 80 wall thickness of 0.126 inches provides extra-heavy duty service, rated to 850 psi and a pressure class of 300 lb. The 3/8-18 thread pattern conforms to ANSI B1.20.1 dimensional standards. Licensed plumbers, pipefitters, and HVAC technicians install this type of fitting where high-pressure or close-coupled threaded connections are required.

This nipple is suited for residential and commercial installations involving black steel pipe systems, including natural gas distribution lines, steam lines, and industrial fluid transfer piping. Its seamless construction eliminates a weld seam, making it the preferred choice in higher-pressure or vibration-prone environments. The black finish is standard for gas service and non-potable fluid applications. At 2.5 inches in length, it serves as a close nipple extension between fittings, valves, or equipment connections in tight-clearance runs.

Key Features

• Seamless SCH 80 construction with 0.126-inch wall thickness for extra-heavy duty service
• Rated to 850 psi with a 300 lb pressure class
• 3/8-18 threaded ends conform to ANSI B1.20.1 standard
• Operating temperature range of -200 to 150 degrees F
• Black steel finish suitable for gas and non-potable fluid service
• 0.6-inch thread engagement length per end

Compatibility

Designed as an OEM-style replacement and standard component for 3/8-inch NPT black steel pipe systems using Schedule 80 seamless fittings in gas, steam, or industrial fluid applications.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified HVAC technician in accordance with applicable local codes and IFGC or IPC requirements. Shut off all pressure to the system and verify zero pressure before disassembling or threading any fitting. Apply an approved pipe thread sealant or PTFE tape rated for the service medium before making up threaded joints. Do not over-tighten; follow standard trade practice for thread engagement on NPT fittings.