Parker 364PTC-6-6-4 Push-to-connect Union 3/8x3/8x1/4 in

Product Description

The PARKER 364PTC-6-6-4 is a push-to-connect union tube fitting designed for fast, tool-free connections in pneumatic and fluid-transfer lines. Constructed from brass with Buna-N seals and a nylon body component, it handles working pressures up to 250 psi. The reducing union configuration accepts 3/8 inch OD tubing on two ports and 1/4 inch OD tubing on the third, making it a practical choice for branching or transitioning between tube sizes in a single fitting. Plumbers, HVAC technicians, and pipefitters install this type of fitting where quick assembly and reliable sealing are the priority.

This fitting is suited for residential and light commercial pneumatic systems, compressed air lines, and compatible fluid-transfer applications where push-to-connect technology is specified. The three-port union configuration allows inline connections without threading or soldering, reducing installation time on service calls or new construction. It is typically found in control-line assemblies, instrumentation tubing runs, and auxiliary pneumatic circuits within HVAC and plumbing systems.

Key Features

• Push-to-connect design requires no tools, solvents, or thread sealant for installation
• Rated to 250 psi maximum working pressure
• Brass construction provides corrosion resistance in air and compatible fluid service
• Buna-N seals deliver reliable sealing across a broad range of operating conditions
• Reducing union accepts 3/8 inch OD on two ports and 1/4 inch OD on the third
• Compact single-piece body simplifies routing in tight spaces

Compatibility

Designed as an OEM-style push-to-connect union fitting for pneumatic and compatible fluid-transfer tubing systems using 3/8 inch and 1/4 inch OD tubing.

Installation Notes

Installation is performed by plumbers, HVAC technicians, or pipefitters. Depressurize and isolate the line completely before disconnecting or installing any push-to-connect fitting. Ensure tubing ends are cut square, deburred, and free of contamination before insertion to achieve a proper seal. To release tubing, depress the collet collar evenly and withdraw the tube without twisting.