Parker 72338213 Push-to-connect Union 3/8 X 1/4 in Od

Product Description

The PARKER 72338213 is a push-to-connect union tube fitting designed to join two tube runs without tools or thread preparation. It accepts tubing with a 3/8 inch outer diameter on one side and a 1/4 inch outer diameter on the other, making it a reducer union for mixed-size pneumatic or fluid tubing lines. The body is molded from bio-sourced Nylon 11, a material known for flexibility, chemical resistance, and dimensional stability. The fitting is rated to 190 psi and uses an EPDM O-ring for a reliable seal. This part is sold in a package quantity of 10 units. It is installed by HVAC technicians, pneumatic systems technicians, and plumbing professionals working with compatible tubing systems.

This fitting is suited for pneumatic control lines, instrumentation tubing, and fluid transfer applications in both residential and light commercial environments. The push-to-connect design allows fast field assembly when routing or splicing tubing runs where reducing from 3/8 inch OD to 1/4 inch OD tubing is required. The white Nylon 11 body handles exposure to a range of common working fluids compatible with EPDM seals. Typical install scenarios include control panel pneumatic lines, HVAC actuator tubing, and low-pressure fluid distribution circuits.

Key Features

• Push-to-connect design allows tool-free tube insertion and secure hold without fittings wrenching
• Reducer union configuration joins 3/8 inch OD tubing to 1/4 inch OD tubing in a single fitting
• Bio-sourced Nylon 11 body offers chemical resistance and flexibility under vibration
• EPDM O-ring seal provides resistance to water, steam, and many common working fluids
• Rated to 190 psi for use in pressurized pneumatic and fluid lines
• Sold in a package of 10 units to support multi-point installations

Compatibility

Designed for use with 3/8 inch OD and 1/4 inch OD tubing in pneumatic and low-pressure fluid systems compatible with Nylon 11 body fittings and EPDM O-ring seals.

Installation Notes

Installation requires no tools beyond a tube cutter to ensure a clean, square tube end before insertion. Cut tubing must be deburred and free of ovality before pushing into the fitting to ensure the O-ring seats correctly and the collet grips uniformly. To remove tubing, depress the collet release ring while pulling the tube. Always depressurize the system completely before disconnecting or repositioning any push-to-connect fitting.