Parker 66PTC-5/32-2 Push-to-connect Tube Fitting Fnpt

Product Description

The PARKER 66PTC-5/32-2 is a brass push-to-connect tube fitting with a female NPT (FNPT) port, designed for pneumatic tubing connections in compressed air and fluid control systems. It accepts 5/32-inch OD tubing on the tube ends and threads into a 1/8-inch NPT female port. Rated to 250 psi maximum working pressure, this fitting is listed as a D.O.T. Air Brake Fitting, making it suitable for Department of Transportation-compliant air brake circuits. The nitrile O-ring provides reliable sealing across a broad service temperature range. Installation is straightforward and does not require ferrules or compression tools.

This fitting is used in pneumatic control systems, air brake lines, and fluid transfer assemblies where a tube-to-female-NPT-to-tube inline or tee-style connection is needed. Common applications include commercial vehicle air brake circuits, industrial pneumatic control panels, and HVAC pneumatic control lines. The D.O.T. rating makes this part particularly relevant for mobile equipment and vehicle air system work, where compliance with federal air brake standards is required.

Key Features

• Push-to-connect design allows fast, tool-free tube insertion and secure retention
• D.O.T. Air Brake Fitting rating for use in compliant air brake systems
• 250 psi maximum working pressure for standard pneumatic service
• Brass construction with nitrile O-ring for durability and chemical compatibility
• Wide service temperature range: -40 degrees F to 200 degrees F
• Tube x FNPT x Tube configuration provides inline female thread access

Compatibility

Designed as an OEM-style replacement or new-installation fitting for pneumatic systems requiring 5/32-inch OD tubing with a 1/8-inch NPT female port connection, including D.O.T.-compliant air brake circuits.

Installation Notes

Installation should be performed by a qualified pneumatic or brake system technician. Depressurize and isolate the air system completely before removing or installing any fittings. Ensure tubing is cut cleanly and squarely, and that the OD is within specification before insertion into the push-to-connect port. Thread engagement into NPT ports should follow standard hand-tight-plus-turns practice per applicable codes; do not overtighten brass fittings.