Parker 66PLP-3-2 Push-to-connect Female Connector

Product Description

The PARKER 66PLP-3-2 is a push-to-connect female connector fitting designed for instrument and pneumatic tubing systems. It provides a tube-to-female NPT inline connection, accepting 3/16 inch OD tubing on both tube ports and threading into a 1/8 inch NPTF female port. Constructed from nickel-plated brass, the fitting handles working pressures up to 300 psi and operates across a temperature range of 0 to 200 degrees F. The internal O-ring is nitrile. The locking button is made from a black flame-resistant material rated UL94 V-0. Licensed plumbers, HVAC mechanics, and instrument technicians install this type of fitting in compressed air, refrigeration sensing, and fluid control lines.

This fitting is suited for residential and light commercial applications where push-to-connect speed and reliability are required. Typical installation scenarios include pneumatic control tubing, instrument sensing lines, and compressed air distribution networks. The NPTF thread form provides a pressure-tight mechanical seal without the need for additional sealant tape, though shop practice often includes thread sealant as a secondary precaution. The compact overall length of 1.13 inches makes it practical in tight panel or manifold installations where space is limited.

Key Features

• Push-to-connect design accepts 3/16 inch OD tubing on both tube ends for tool-free insertion
• 1/8 inch NPTF female thread provides a pressure-tight connection to NPT-ported components
• Nickel-plated brass construction resists corrosion in damp or mildly aggressive environments
• 300 psi maximum working pressure rated for compressed air and instrument service
• Nitrile O-ring compatible with air, water, and a broad range of non-aromatic fluids
• UL94 V-0 rated flame-resistant locking button for added safety in enclosed enclosures

Compatibility

Designed as an OEM-style push-to-connect fitting for instrument and pneumatic tubing systems using 3/16 inch OD tubing and 1/8 inch NPTF female-ported components.

Installation Notes

Installation is performed by licensed plumbers, HVAC technicians, or instrument technicians. Always depressurize and isolate the line before removing or installing any push-to-connect fitting. To release the tubing, depress the collet button evenly and withdraw the tube in a single straight pull. Inspect the tubing cut end to ensure it is square and burr-free before insertion, as a rough cut can damage the O-ring and cause a leak under pressure.