Parker 66CA-6-4 Compression Tube Connector Brass

Product Description

The PARKER 66CA-6-4 is a brass compression tube connector designed to join tubing to a female NPT port in hydraulic, pneumatic, and fluid-transfer systems. It features a compression end on one side and a female NPTF threaded end on the other, providing a reliable leak-resistant connection without soldering or special tooling. Rated for a maximum working pressure of 1000 psi and a temperature range of -65 degrees F to 250 degrees F, this fitting suits demanding service conditions across refrigeration, instrumentation, and general fluid-line applications. Plumbers, HVAC technicians, and industrial pipe fitters are the typical installers.

This connector is suited for residential and light commercial applications where tubing must terminate into a threaded female NPT port. Common install scenarios include instrument tubing runs, refrigeration line sets, compressed air distribution, and hydraulic control lines. The NPTF thread standard provides a pressure-tight mechanical seal at the threaded joint. The compression end accommodates standard tubing without the need for flaring or welding, making field installation straightforward.

Key Features

• Brass construction for corrosion resistance in fluid and gas service
• Compression x FNPT end connections allow tubing to thread directly into female NPT ports
• NPTF thread standard for a pressure-tight seal at the threaded end
• 1000 psi maximum working pressure for demanding fluid-line service
• Wide temperature range: -65 degrees F to 250 degrees F
• No soldering or flaring required at the compression end

Compatibility

Designed as an OEM-style replacement or new-installation fitting for systems requiring a 1/4-18 NPTF compression-to-female-NPT transition in brass construction.

Installation Notes

Installation is typically performed by a licensed plumber, HVAC technician, or instrumentation technician. Shut off and depressurize the line completely before disassembling or connecting any fittings. Ensure tubing is cut cleanly and deburred before inserting into the compression end to achieve a proper seal. Follow applicable codes such as the International Plumbing Code or system manufacturer guidelines for fitting selection and torque procedures.