Parker PPB6MC4-MG Push-to-connect Fitting 3/8x1/4

Product Description

The PARKER PPB6MC4-MG is a push-to-connect tube fitting connector designed for quick, tool-free joining of tubing with a 3/8-inch OD inlet and a 1/4-inch OD outlet. Constructed from polypropylene, this reducer connector handles operating pressures up to 150 psi. The push-to-connect mechanism allows a technician to make a secure, leak-resistant connection by inserting the tube end until it seats fully — no ferrules, compression nuts, or thread sealant required. Plumbers, HVAC technicians, and fluid-system installers use this fitting where a fast, reliable polypropylene connection is needed in low-to-medium pressure lines.

This fitting is suited for residential and light commercial plumbing, HVAC condensate drain systems, water treatment lines, and other fluid-handling applications where polypropylene's chemical resistance and lightweight construction are advantageous. The reducer configuration accommodates a transition from 3/8-inch OD tubing on one port to 1/4-inch OD tubing on the other, making it practical for branch or step-down plumbing runs in tight spaces or panel-mounted assemblies.

Key Features

• Push-to-connect design allows tool-free tube insertion for fast field installation
• Reducer configuration connects 3/8-inch OD tubing to 1/4-inch OD tubing in a single fitting
• Polypropylene construction offers corrosion resistance and compatibility with a wide range of fluids
• Rated to 150 psi for reliable performance in low-to-medium pressure systems
• Compact body dimensions (1.41 x 0.81 x 1.41 inches) suited for space-constrained installations

Compatibility

Designed as an OEM-style push-to-connect replacement connector for systems using 3/8-inch OD and 1/4-inch OD tubing in polypropylene push-fit plumbing or fluid-handling assemblies.

Installation Notes

Installation should be performed by a qualified plumber or HVAC technician following applicable IPC or local plumbing codes. Depressurize and drain the system completely before removing or installing any fitting. Ensure tube ends are cut square, deburred, and clean before insertion — irregular cuts can compromise the internal collet seal and cause leaks. Do not exceed the rated 150 psi operating pressure for this fitting.