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The MIDLAND INDUSTRIES 51147 is a seamless Schedule 80 pipe nipple rated for demanding fluid and gas distribution applications. It features a 1-1/2-inch male NPT connection on both ends with a 1-1/2-11-1/2 thread form conforming to ANSI/ASME B1.20.1. Constructed from 304 stainless steel, the nipple delivers a working pressure of 3000 psi and resists corrosion in wet, chemical, and high-temperature service environments. At 5 inches in length and Schedule 80 wall thickness, it provides added strength over standard-weight fittings, making it a reliable choice for industrial, commercial, and mechanical piping systems where integrity and longevity are non-negotiable requirements.
This nipple is suited for use in air, water, oil, natural gas, and steam service lines. Plumbers, pipefitters, and mechanical contractors reach for Schedule 80 seamless stainless nipples in process piping, boiler rooms, steam distribution headers, compressed air manifolds, and fuel gas supply lines. The 304 stainless steel construction is appropriate for both indoor and outdoor installations where carbon steel fittings would be vulnerable to corrosion or contamination concerns.
Designed as an OEM-style replacement or new-installation fitting for Schedule 80 stainless steel piping systems carrying air, water, oil, natural gas, or steam service media.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable ASME and local mechanical code requirements. Shut off and depressurize the line completely before removing or installing any threaded fitting. Apply an appropriate thread sealant rated for the service medium and operating pressure before making up the joint. Do not over-torque threaded connections, as stainless steel threads are susceptible to galling.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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