Parker 371PTCSP-6-4-6 Push-to-connect Plug-in Run Tee

Product Description

The PARKER 371PTCSP-6-4-6 is a push-to-connect plug-in run tee tube fitting designed for pneumatic and fluid-transfer tubing systems. It accepts 3/8-inch OD tubing on the two run ports and 1/4-inch OD tubing on the branch port, allowing a single fitting to split or branch a line without tools or ferrules. Constructed from brass with Buna-N seals and a nylon body insert, this fitting is rated to 250 psi maximum working pressure and handles temperatures from -40 degrees F to 200 degrees F. Licensed plumbers, HVAC technicians, and fleet maintenance professionals install this fitting wherever a compact, push-in tee connection is required in tubing runs.

This fitting is suited for use in compressed air, pneumatic control, and fluid-line applications in both residential and commercial settings. Its push-to-connect design eliminates the need for thread sealant, wrenches, or flare tooling at the tee junction. The plug-in style allows tubing to be inserted and locked in a single motion, making it a practical choice for tight-space installations in equipment bays, HVAC control panels, and vehicle brake-line systems. It meets D.O.T. FMVSS571.106, SAE J2494-3, and SAE J844 standards, making it appropriate for automotive and over-the-road vehicle air brake tubing applications as well.

Key Features

• Push-to-connect plug-in design — no tools required for tube insertion
• Brass body with Buna-N seals provides durability in air and fluid service
• Rated to 250 psi maximum working pressure
• Wide operating temperature range: -40 degrees F to 200 degrees F
• Meets D.O.T. FMVSS571.106, SAE J2494-3, and SAE J844 standards
• Compact run-tee geometry — 3/8 x 3/8 x 1/4 inches OD port configuration

Compatibility

Designed for use with 3/8-inch OD tubing on run ports and 1/4-inch OD tubing on the branch port in pneumatic, air brake, and fluid-transfer systems meeting SAE J844 and SAE J2494-3 tubing specifications.

Installation Notes

Depressurize and isolate the tubing circuit completely before removing or installing any push-to-connect fittings. Verify that tubing cut ends are clean, square, and free of burrs before insertion to ensure a proper seal. For vehicle air brake applications, installation must comply with D.O.T. FMVSS571.106 requirements and should be performed by qualified technicians familiar with applicable federal motor vehicle safety standards. To release tubing, depress the collet collar and withdraw the tube in a single smooth motion.