Parker 68PTC-6-4 Push-to-connect Tube Fitting 3/8 in Od

Product Description

The PARKER 68PTC-6-4 is a push-to-connect tube-to-male NPTF tube fitting machined from brass. It provides a tool-free tube connection on both ends with a 1/4 inch NPTF male thread at the center port. The fitting accepts 3/8 inch OD tubing and is rated to 250 psi maximum working pressure. Its nitrile O-ring seals perform across a wide temperature range of -40 degrees F to 200 degrees F. Licensed plumbers, fleet maintenance technicians, and pneumatic system installers use this fitting where quick, reliable tube connections are required without compression hardware.

This fitting is specified for D.O.T. truck and trailer pneumatic brake and air line systems. It is compatible with SAE J844 Type A and Type B tubing and meets D.O.T. FMVSS571.106, SAE J2494, and SAE J2494-3 specifications, making it a code-compliant choice for commercial vehicle air system repairs and new installations. Its brass construction resists corrosion in the moisture-laden environments typical of air brake circuits.

Key Features

• Push-to-connect design on both tube ports allows tool-free tube insertion and secure retention
• 1/4 inch NPTF male thread provides a dry-seal connection at the center port
• Brass construction offers corrosion resistance suitable for air brake and pneumatic circuits
• Nitrile O-ring seals rated from -40 degrees F to 200 degrees F
• Meets D.O.T. FMVSS571.106, SAE J2494, and SAE J2494-3 specifications
• Rated to 250 psi maximum working pressure

Compatibility

Designed for use with SAE J844 Type A and Type B tubing in D.O.T. truck and trailer air system applications. Verify tube OD and thread specification before installation.

Installation Notes

Installation is typically performed by licensed fleet mechanics or pneumatic system technicians. Depressurize the air system completely before removing or installing any fitting. Ensure tubing is cut square and deburred before seating into the push-to-connect port for a proper seal. Thread engagement at the NPTF port should follow standard dry-seal thread practice without sealant tape unless otherwise specified by the system manufacturer.