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The PARKER 12MSC12N-316 is a stainless steel compression tube connector designed to join tubing to a male NPT-threaded port in fluid and gas distribution systems. It provides a leak-resistant, tool-assisted compression connection on one end and a 3/4-14 NPT male thread on the other, making it suitable for high-pressure and extreme-temperature service lines. Rated to 5800 psi maximum working pressure and capable of handling temperatures from -425 degrees F to 1200 degrees F, this fitting is built for demanding industrial, mechanical, and process piping applications. Plumbers, pipefitters, and industrial maintenance technicians typically install this connector where reliable tube-to-pipe transitions are required.
This fitting is used in residential and commercial mechanical systems, industrial process lines, and instrumentation tubing runs where a compression-to-NPT transition is needed. Its stainless steel construction makes it appropriate for corrosive environments, cryogenic service, and high-temperature applications. The 3/4-14 NPT thread size is a common pipe thread standard, making this connector compatible with a wide range of valves, instruments, and pipe fittings in fluid handling and pneumatic systems.
Designed as an OEM-style and aftermarket compression-to-male-NPT connector for use in fluid, gas, and instrumentation tubing systems requiring a 3/4-14 NPT thread interface.
Installation should be performed by a licensed plumber, pipefitter, or qualified mechanical technician. Shut off system pressure and bleed the line before removing or installing any compression fitting. Use appropriate thread sealant on the NPT male threads in accordance with applicable plumbing and mechanical codes such as the IPC or ASME B31. Do not over-tighten the compression nut, as this can deform the ferrule and compromise the seal.
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