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The PARKER 12SC12-316 is a stainless steel compression tube union designed to join two tubes of equal outside diameter in a straight-line configuration. With a 3/4-inch tube outside diameter and a maximum working pressure of 5800 psi, this fitting is built for demanding fluid and gas systems where leak-free performance and corrosion resistance are required. The compression-by-compression end connections allow for tool-assisted installation without welding or soldering. Licensed plumbers, pipefitters, and instrumentation technicians typically install this fitting in high-pressure line applications.
This union fitting is suited for use in industrial, commercial, and trade applications where stainless steel construction is specified for corrosion resistance or elevated-temperature service. The rated temperature range of -425 degrees F to 1200 degrees F makes it appropriate for cryogenic systems, steam lines, hydraulic circuits, and process instrumentation tubing runs. It is sold in a package quantity of one.
Designed as an OEM-style compression union for 3/4-inch outside diameter tubing in high-pressure fluid and gas systems where stainless steel fittings are specified.
Installation should be performed by a licensed pipefitter, plumber, or instrumentation technician familiar with compression fitting assembly. Before servicing any line, depressurize and isolate the system completely. Compression fittings require proper ferrule seating during initial make-up; follow the fitting manufacturer's turn-count procedure rather than relying on torque alone. Installations on gas or high-pressure fluid systems must comply with applicable local codes and standards, including ASME and applicable OSHA pressure system requirements.
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