Parker 66PLP-5/32-4 Push-to-connect Female Connector

Product Description

The PARKER 66PLP-5/32-4 is a push-to-connect female connector fitting designed for tube-to-female NPT plumbing connections in compressed air, pneumatic control, and fluid transfer systems. Constructed from nickel-plated brass with a nitrile O-ring, this fitting accepts 5/32-inch OD tubing and threads into a 1/4-inch NPTF female port. It is rated to 300 psi maximum working pressure and handles temperatures from 0 degrees F to 200 degrees F. The push-to-connect mechanism allows fast, tool-free tube insertion while the black button is made from UL94 V-0 flame-resistant material, meeting standard flame-resistance requirements. Plumbers, HVAC technicians, and pneumatic system installers commonly spec this fitting for inline connections where a tube run must terminate at a female-threaded port.

This fitting is suited for residential and light commercial pneumatic and fluid systems where 5/32-inch OD tubing connects to a 1/4-inch NPTF-threaded component such as a valve body, manifold, or instrument port. The NPTF thread form provides a pressure-tight mechanical seal without relying solely on thread sealant. Typical applications include control tubing runs, instrument air lines, and low-pressure fluid circuits operating within the rated pressure and temperature range. The nitrile O-ring provides reliable sealing compatibility with common pneumatic and water-service media.

Key Features

• Push-to-connect design allows tool-free tube insertion for fast assembly
• Nickel-plated brass body resists corrosion in pneumatic and fluid service environments
• Rated to 300 psi maximum working pressure
• Operating temperature range of 0 degrees F to 200 degrees F
• NPTF thread form creates a pressure-tight seal at the female port connection
• Black actuator button meets UL94 V-0 flame-resistant material standard
• Nitrile O-ring provides sealing compatibility with common pneumatic and fluid media

Compatibility

Designed as an OEM-style push-to-connect fitting for systems using 5/32-inch OD tubing with a 1/4-inch NPTF female port connection in pneumatic, instrument air, or fluid transfer applications.

Installation Notes

Installation is performed by plumbers, pipefitters, or HVAC technicians working on pneumatic or fluid control systems. Depressurize and isolate the system completely before removing or installing any fitting. Inspect the tubing end for squareness and absence of burrs before insertion, as irregular tube ends can compromise the O-ring seal. Apply thread sealant or PTFE tape to the NPTF threads as appropriate per the system fluid and applicable code requirements such as IPC or IFGC where pneumatic controls are integrated with mechanical systems.