Parker 66CA-6-8 Compression Tube Connector Brass Fnpt

Product Description

The PARKER 66CA-6-8 is a brass compression tube connector designed to join a compression tube end to a female National Pipe Taper Fitting (FNPT) port. This fitting is used in fluid and pneumatic lines where a secure, leak-resistant mechanical connection is required between a tubing run and a threaded female port. Machined from brass, the 66CA-6-8 carries a maximum working pressure of 1000 psi and a temperature range of -65 degrees F to 250 degrees F. It is installed by licensed plumbers, HVAC technicians, and pipefitters working on compressed air, refrigeration, fuel, or hydraulic tubing systems.

The 66CA-6-8 fits residential and light commercial applications where compression-to-female-NPT transitions are needed. Common install scenarios include connecting copper or brass tubing to threaded manifolds, valves, regulators, and instrument ports. The thread standard is NPTF, which provides a pressure-tight seal at the threads themselves, reducing dependence on tape or thread sealant for leak prevention. This connector is suited for instrumentation lines, fuel supply, compressed air distribution, and similar moderate-pressure fluid systems.

Key Features

• Brass construction for corrosion resistance and durability in fluid and gas service
• Compression x FNPT end connections for a tube-to-threaded-port transition
• NPTF thread standard for pressure-tight thread-form sealing
• Rated to 1000 psi maximum working pressure
• Wide temperature range from -65 degrees F to 250 degrees F
• 1/2-14 thread size for compatibility with standard NPT port sizes

Compatibility

Designed as an OEM-style compression fitting for use in fluid, pneumatic, and gas tubing systems requiring a compression tube to female NPT threaded connection at the 1/2-14 thread size.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or HVAC technician in accordance with applicable local codes. Depressurize and isolate the line completely before disassembling or installing any compression fitting. The compression ferrule must be seated squarely on the tubing before tightening the nut to avoid distortion or leaks. NPTF threads are designed for pressure-tight metal-to-metal sealing; inspect thread condition before assembly and apply thread sealant per the system requirements of the installation.