Parker 172PTCNS-5/32-2 Push-to-connect Tube Fitting

Product Description

The PARKER 172PTCNS-5/32-2 is a brass push-to-connect tube fitting with a male NPT end, designed for inline tube-to-tube connections with a threaded port transition. It accepts 5/32 inch OD tubing on both push-to-connect ends and carries a 1/8 inch male NPT thread. Rated to 250 psi maximum working pressure, this fitting is certified as a D.O.T. air brake fitting, making it suitable for compressed air and pneumatic brake line applications. The brass body and nitrile O-ring construction provide reliable sealing across a wide temperature range. Licensed HVAC techs, fleet mechanics, and pneumatic system installers use this fitting in production and service environments where quick, tool-free tube connections are required alongside a threaded port.

This fitting is used in D.O.T.-compliant air brake systems, compressed air distribution lines, and pneumatic control circuits found in commercial vehicles, industrial equipment, and HVAC pneumatic controls. Its push-to-connect design allows fast tube insertion without ferrules or compression nuts, reducing assembly time in tight spaces. The male NPT thread end transitions the line to a threaded port on a valve, manifold, or component body. It is appropriate for both new installations and field service repairs where the 5/32 inch OD tube and 1/8 inch NPT port size are specified.

Key Features

• D.O.T.-rated air brake fitting for compliance in commercial vehicle pneumatic brake systems
• Push-to-connect ends accept 5/32 inch OD tubing without additional ferrules or tools
• 1/8 inch male NPT thread for direct connection to standard threaded ports
• Brass body construction for corrosion resistance in compressed air service
• Nitrile O-ring provides positive sealing across a -40 to 200 degrees F operating range
• 250 psi maximum working pressure suitable for typical pneumatic and air brake service pressures

Compatibility

Designed for use with 5/32 inch OD tubing in D.O.T. air brake and compressed air pneumatic systems requiring a tube-to-male-NPT-to-tube inline transition. Consult system schematics and applicable D.O.T. regulations to confirm fitment before installation.

Installation Notes

Installation is performed by licensed mechanics or qualified pneumatic system technicians. Depressurize the air system completely before removing or installing any fittings. Ensure tubing is cut cleanly and squarely and is free of burrs before inserting into the push-to-connect ends; damaged or out-of-round tubing will compromise the seal. Apply thread sealant appropriate for air service to the NPT threads in accordance with manufacturer and applicable D.O.T. guidelines.