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The PARKER 164C-6 is a brass compression tube union designed to join two lengths of tubing in a straight-line configuration using compression-style end connections on both sides. Rated to 200 psi maximum working pressure and suitable for temperatures ranging from -65 degrees F to 250 degrees F, this union is built to SAE J-512 standards. It accepts 3/8 inch outside diameter tubing and uses a 9/16-24 thread size. Licensed plumbers, HVAC technicians, and refrigeration mechanics install this fitting in fuel, refrigerant, and fluid-handling lines where a reliable, leak-resistant union connection is required without soldering or flaring.
This compression union is suited for residential and light commercial applications involving 3/8 inch OD tubing runs. Typical install scenarios include fuel-line connections, hydraulic service lines, and HVAC refrigerant or condensate piping where compression fittings are permitted by the applicable system specification. The overall length of 1.03 inches makes it compact enough for tight equipment bays and panel enclosures.
Designed as an OEM-style compression union for 3/8 inch outside diameter tubing systems conforming to SAE J-512 specifications.
Installation is performed by a licensed plumber, HVAC technician, or refrigeration mechanic. Shut off and depressurize the system fully before disconnecting or installing any compression fitting. Ensure tubing ends are cut square and deburred before seating the ferrule to prevent leaks. Follow applicable codes — including IPC or IFGC sections governing fuel and fluid piping — for fitting selection and pressure testing after installation.
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