Parker PPB4EU4-MG Push-to-connect Union 1/4 Inch Od

Product Description

The PARKER PPB4EU4-MG is a push-to-connect union tube fitting designed for tube-to-tube connections in pneumatic and fluid handling systems. Constructed from polypropylene with a black finish, it accepts 1/4 inch outside diameter tubing on both ends and is rated to 230 psi. The push-to-connect design allows for fast, tool-free insertion and secure sealing without threading or compression ferrules. This fitting is commonly installed by HVAC technicians, plumbers, and industrial maintenance professionals working with compatible plastic or flexible tubing in low-to-medium pressure applications.

This union fitting is suited for residential and light commercial systems where a straight in-line tube junction is needed. Typical applications include pneumatic control lines, water filtration plumbing, HVAC condensate or sensing lines, and other fluid or air distribution runs using 1/4 inch OD tubing. The polypropylene body resists corrosion and is compatible with a range of water-based and mild chemical media. Its compact body profile allows installation in tight spaces where conventional fittings would be difficult to seat.

Key Features

• Push-to-connect design allows tool-free tube insertion for faster assembly
• Rated to 230 psi for use in low-to-medium pressure pneumatic and fluid systems
• Polypropylene construction resists corrosion and chemical degradation
• Accepts 1/4 inch OD tubing on both ends for a straight in-line union
• Compact body at 0.87 inches height and length, 0.66 inches width for tight-space installations

Compatibility

Designed as an OEM-style push-to-connect replacement union for systems using 1/4 inch OD tubing in pneumatic, water filtration, and HVAC control line applications.

Installation Notes

Installation requires no special tools — cut tubing to a clean, square end, then insert fully until it seats against the internal stop. Depressurize and de-energize the system before disconnecting or replacing any fitting. For pneumatic control applications, verify the tubing material and system pressure do not exceed the fitting's rated limits. Follow applicable IPC or system manufacturer guidelines for fluid handling line connections.