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

Product Description

The PARKER 66CA-8-6 is a brass compression tube connector designed to join a compression tube end to a female National Pipe Taper Fuel (FNPT) port. It carries a 3/8-18 NPTF thread and is rated for a maximum working pressure of 750 psi and temperatures ranging from -65 degrees F to 250 degrees F. The brass body provides corrosion resistance and reliable sealing in fluid and pneumatic line applications. This fitting is installed by licensed plumbers, HVAC technicians, and pipefitters working on instrumentation, refrigeration, or hydraulic tube assemblies where a leak-free compression-to-pipe connection is required.

The 66CA-8-6 is suited for residential and light commercial applications involving tubing runs that terminate at threaded female pipe ports. Typical install scenarios include instrument lines, fuel systems, compressed air distribution, and refrigerant or fluid control circuits where a compression fitting transition to NPT pipe threads is needed. Its wide temperature range makes it appropriate for both low-temperature refrigerant service and higher-temperature fluid systems operating up to 250 degrees F.

Key Features

• Brass construction for corrosion resistance and durability in fluid and pneumatic service
• 3/8-18 NPTF thread standard for pressure-tight sealing without sealant tape on the thread form
• Compression x FNPT end connections for tool-free tube insertion and secure female port interface
• Rated to 750 psi maximum working pressure
• Operating temperature range of -65 degrees F to 250 degrees F covers refrigerant and hot-fluid applications

Compatibility

Designed as an OEM-style compression tube connector for use in compression-to-female NPT pipe thread applications across refrigeration, HVAC, instrumentation, and fluid power systems.

Installation Notes

Installation should be performed by a qualified plumber, pipefitter, or HVAC technician. De-pressurize and isolate the line before disassembly or installation. NPTF threads are designed to seal on the thread form itself; verify thread engagement and inspect for leaks after pressurizing the system. Follow applicable codes including ASME B31 piping standards or local jurisdiction requirements for the system type being serviced.