Parker 66PLP-5-2 Push-to-connect Female Connector

Product Description

The PARKER 66PLP-5-2 is a push-to-connect female connector fitting designed for tube-to-female NPT inline connections in pneumatic and fluid transfer systems. It accepts 5/16-inch OD tubing on both tube ports and threads into a 1/8-inch NPTF female port. Constructed from nickel-plated brass, it handles working pressures up to 300 psi and temperatures from 0 degrees F to 200 degrees F. The nitrile o-ring provides a reliable seal across a wide range of compatible media. Installation requires no tools on the tube side — tubing seats and locks with a single push. The black button release is made from UL94 V-0 rated flame-resistant material, meeting recognized flammability standards for the button component.

This fitting is suited for residential and light commercial pneumatic lines, instrumentation tubing, HVAC controls, and compressed air distribution where a compact, no-thread tube connection is needed at an NPTF female port. Typical applications include control panel plumbing, sensor line connections, and equipment manifold hook-ups where quick, repeatable tube connections are required by technicians servicing pneumatic or fluid systems.

Key Features

• Push-to-connect tube entry on both tube ports — no ferrules, nuts, or tube-side tools required
• Nickel-plated brass body resists corrosion in wet or humid service environments
• Rated to 300 psi maximum working pressure
• Operating temperature range of 0 degrees F to 200 degrees F
• Nitrile o-ring for broad media compatibility including air and many hydraulic fluids
• UL94 V-0 flame-resistant black release button material

Compatibility

Designed as an OEM-style push-to-connect replacement or new-installation fitting for pneumatic and fluid systems using 5/16-inch OD tubing with a 1/8-inch NPTF female port connection.

Installation Notes

This fitting is typically installed by licensed HVAC technicians, plumbers, or instrumentation mechanics working on pneumatic control or fluid distribution lines. Depressurize and isolate the system before removing any existing fitting or cutting tubing. Ensure cut tubing ends are square and free of burrs before inserting into the push-to-connect ports. Thread engagement at the NPTF port should follow applicable piping codes; use thread sealant rated for the service media and pressure.