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The PARKER 68CA-12-8 is a brass compression tube connector designed to join tubing to a male National Pipe Taper Fuel (NPTF) threaded port. It features a compression inlet on one end and a 1/2-14 MNPT threaded outlet on the other, creating a leak-resistant, vibration-tolerant connection without soldering or flaring. Rated to 550 psi maximum working pressure, the connector handles temperatures from -65 degrees F to 250 degrees F. Brass construction provides corrosion resistance and compatibility with a wide range of fluids and gases common to HVAC, refrigeration, plumbing, and pneumatic systems. Licensed tradespeople and industrial maintenance technicians are the primary installers.
This fitting is suited for residential and light commercial applications where tubing must terminate at a threaded port on valves, manifolds, regulators, or equipment panels. Typical scenarios include connecting copper or compatible tubing to instrumentation, fuel lines, air lines, or hydraulic circuits. The NPTF thread standard provides a pressure-tight seal through thread interference, reducing reliance on sealants in many service conditions. The -65 degrees F minimum temperature rating also makes this connector viable in refrigeration and low-ambient outdoor installations.
Designed as an OEM-style replacement or new-installation compression-to-MNPT connector for systems requiring a 1/2-14 NPTF male threaded outlet with a compression tube inlet.
Installation should be performed by a licensed plumber, HVAC technician, or qualified pipefitter familiar with compression fitting assembly and NPTF thread engagement practices. Shut off and depressurize the system completely before disassembly or fitting installation. Hand-tighten the compression nut onto the tubing before applying a final wrench turn per standard compression fitting procedure; do not overtighten. Thread sealant use should follow system fluid compatibility requirements and applicable plumbing or mechanical codes.
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