Parker 179PTC-4-2 Swivel 45 Male Elbow 1/4 Od 1/8 Npt Brass

Product Description

The PARKER 179PTC-4-2 is a push-to-connect swivel 45-degree male elbow tube fitting designed for air brake and pneumatic plumbing systems. Constructed from brass, it connects 1/4-inch OD tubing to a 1/8-inch male NPT port with a swivel elbow geometry that simplifies routing in tight spaces. Rated to 250 psi maximum working pressure, it handles a temperature range of -40 degrees F to 200 degrees F. The push-to-connect design allows fast, tool-free tube insertion, while the swivel feature permits the fitting body to rotate before final positioning. An internal nitrile O-ring provides a reliable seal under pressure and temperature cycling. Licensed plumbers, fleet mechanics, and HVAC technicians install this type of fitting in compressed air and fluid transfer lines.

This fitting is specified for D.O.T. air brake circuit plumbing on commercial vehicles, trailers, and heavy equipment. It meets D.O.T. FMVSS 571.106, SAE J2494, SAE J2494-3, and SAE J844 standards, making it appropriate for federally regulated air brake systems. It is also suitable for general pneumatic tubing runs in industrial and HVAC applications where a 1/4-inch OD push-to-connect connection terminates at a 1/8-inch NPT male port. The 45-degree elbow orientation reduces bend stress on the tubing and allows more direct routing compared to a straight fitting.

Key Features

• Push-to-connect design allows fast tube insertion without tools or ferrules
• Swivel body rotates before final lock-down for precise line routing
• Brass construction provides corrosion resistance in air and fluid service
• Nitrile O-ring seal rated from -40 degrees F to 200 degrees F
• 250 psi maximum working pressure
• Meets D.O.T. FMVSS 571.106, SAE J2494, SAE J2494-3, and SAE J844 standards

Compatibility

Designed for use with 1/4-inch OD push-to-connect tubing terminating at 1/8-inch male NPT ports in D.O.T.-compliant air brake systems and general pneumatic plumbing applications.

Installation Notes

Installation should be performed by a qualified mechanic or technician familiar with D.O.T. air brake regulations. Depressurize the air system completely before removing or installing any fittings. Ensure tubing is cut cleanly and squarely and that the tube end is free of burrs before inserting into the push-to-connect port. Apply thread sealant compatible with NPT connections to the male NPT threads per standard practice; verify the swivel body is oriented correctly before torquing the NPT end into the port.