Parker 68PTC-4-6 Push-to-connect Male Connector

Product Description

The PARKER 68PTC-4-6 is a push-to-connect male connector fitting designed for tube-to-male NPT pneumatic and air brake line connections. Manufactured from brass with a nitrile O-ring, this fitting accepts 1/4-inch OD tubing on both tube ends and threads into a 3/8-inch NPTF port. It is rated for a maximum working pressure of 250 psi and handles temperatures from -40 degrees F to 200 degrees F. The push-to-connect design allows fast, tool-free tube insertion while maintaining a secure, leak-resistant seal. It is sold individually and is suited for fleet maintenance shops, HVAC service vehicles, and commercial vehicle brake system work.

This fitting is classified as a D.O.T. air brake fitting, meeting FMVSS 571.106, SAE J2494, and SAE J2494-3 standards. It is appropriate for use in compressed air systems on commercial trucks, trailers, and other vehicles subject to federal air brake regulations. The NPTF thread type provides a pressure-tight mechanical seal without relying solely on tape or sealant. Installation is typically performed by fleet mechanics, licensed brake technicians, or HVAC equipment technicians working on pneumatic control lines.

Key Features

• Push-to-connect design for fast, tool-free tube insertion on 1/4-inch OD tubing
• Brass construction for corrosion resistance in pneumatic service
• Nitrile O-ring provides reliable sealing across a wide temperature range
• Rated to 250 psi maximum working pressure
• Meets D.O.T. FMVSS 571.106, SAE J2494, and SAE J2494-3 air brake standards
• NPTF thread ensures a pressure-tight connection at the male port

Compatibility

Designed as an OEM-style replacement or service fitting for compressed air brake lines and pneumatic control systems requiring a 1/4-inch OD push-to-connect tube fitting with a 3/8-inch NPTF male thread entry.

Installation Notes

Installation should be performed by a qualified brake or fleet technician in accordance with applicable D.O.T. regulations and vehicle manufacturer guidelines. Depressurize the air system completely before removing or installing any air brake fitting. Inspect the NPTF threads and mating port for damage or debris before making up the connection. Thread sealant is not required on NPTF connections but may be used per shop practice; follow applicable federal motor vehicle safety standards for final inspection.