Parker PPB6UC4-MG Push-to-connect Union 3/8x1/4 in Od

Product Description

The PARKER PPB6UC4-MG is a push-to-connect tube union fitting designed to join two tubes of different outside diameters in a single inline connection. Constructed from polypropylene, it handles pressures up to 150 psi and connects a 3/8 inch OD tube on one end to a 1/4 inch OD tube on the other. The push-to-connect design allows for fast, tool-free assembly, making it well suited for plumbing, HVAC, and fluid-handling systems where reducing union connections are needed. Licensed plumbers, HVAC technicians, and industrial maintenance technicians are the typical installers for this fitting.

This fitting is used in residential and light commercial fluid distribution systems where two tubes of differing outside diameters must be joined inline. Common applications include water supply lines, compressed air distribution, chemical-transfer tubing, and HVAC condensate or pneumatic control lines. The polypropylene body resists corrosion and many common chemicals, making it appropriate for both wet and dry service environments where metal fittings may not be suitable.

Key Features

• Push-to-connect design allows tool-free tube insertion and secure retention
• Reduces from 3/8 inch OD to 1/4 inch OD in a single union body
• Polypropylene construction offers corrosion resistance and chemical compatibility
• Rated to 150 psi working pressure
• Compact body measuring 1.7 x 1.7 x 0.8 inches fits in tight installations

Compatibility

Designed as an OEM-style push-to-connect replacement union fitting for systems using 3/8 inch and 1/4 inch OD tubing in plumbing, HVAC, and fluid-handling applications.

Installation Notes

Cut tubing square and deburr the end before inserting into the fitting to ensure a proper seal. Verify the tube outside diameter matches the fitting end before insertion, as mixing metric and inch OD tubes can result in leaks. Shut off and depressurize the system before disconnecting or installing any push-to-connect fitting. Installation should comply with applicable local plumbing or mechanical codes.