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

Product Description

The PARKER 66PTC-5/32-4 is a push-to-connect tube-to-female NPT fitting designed for use in compressed air and pneumatic tubing systems. It provides a tube-in, tube-out female connector configuration with a 5/32-inch tube outside diameter and a 1/4-inch FNPT thread port. Constructed from brass with a nitrile O-ring, this fitting handles working pressures up to 250 psi across a temperature range of -40 degrees F to 200 degrees F. It carries DOT FMVSS571.106, SAE J2494, and SAE J2494-3 certifications, making it a compliant choice for DOT air brake tubing circuits. Licensed HVAC technicians, plumbers, and fleet mechanics install this fitting in applications where inline tube connections to a female NPT port are required.

This fitting is rated as a DOT air brake fitting and is suited for use in vehicle air brake systems, pneumatic control lines, and compressed-air distribution networks where reliable push-to-connect performance is required. The brass body and nitrile O-ring construction make it appropriate for dry air and compatible pneumatic media across both mobile and stationary system types. It is a single-piece unit sold individually, making it practical for service replacement or small-volume installations in both residential and commercial pneumatic applications.

Key Features

• Push-to-connect design allows tool-free tube insertion for fast, secure connections
• Brass body construction provides corrosion resistance and durability in compressed-air service
• Nitrile O-ring sealing element compatible with dry air and standard pneumatic media
• Rated to 250 psi maximum working pressure
• Wide temperature range: -40 degrees F to 200 degrees F
• DOT-compliant for air brake circuit use per FMVSS571.106, SAE J2494, and SAE J2494-3

Compatibility

Designed as a DOT air brake fitting for pneumatic tubing systems using 5/32-inch OD tube and 1/4-inch FNPT ports, compliant with DOT FMVSS571.106, SAE J2494, and SAE J2494-3 specifications.

Installation Notes

Installation should be performed by a qualified technician familiar with pneumatic or air brake system service. Depressurize and isolate the air circuit completely before removing or installing any fittings. Ensure the tube end is cut cleanly and squarely and is free of burrs before insertion into the push-to-connect collet. Verify thread engagement on the FNPT port is proper and leak-free before returning the system to service.