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The PARKER 170PTCNS-4-2 is a push-to-connect rigid 90-degree female elbow tube fitting designed for air brake and pneumatic tubing systems. It connects 1/4-inch OD tubing to a 1/8-inch NPTF female port, providing a secure, leak-resistant bend in tight routing configurations. Constructed from brass with a nitrile O-ring, this fitting handles working pressures up to 250 psi and operates across a temperature range of -40 degrees F to 200 degrees F. It carries D.O.T. FMVSS571.106, SAE J2494, SAE J2494-3, and SAE J844 certifications, making it compliant for use in air brake circuits on commercial vehicles and heavy equipment.
This fitting is primarily used in D.O.T.-compliant air brake lines on trucks, trailers, and heavy-duty vehicles. It is also suitable for pneumatic control circuits in industrial and mobile equipment where a 90-degree tube-to-female-port transition is required. The push-to-connect design allows fast, tool-free tube insertion while maintaining a rigid elbow geometry. Technicians working on air brake systems, fleet maintenance, and pneumatic plumbing regularly specify this fitting when routing 1/4-inch OD nylon or polyurethane tubing into female NPT ports.
Designed as a D.O.T.-compliant air brake fitting for use with 1/4-inch OD tubing connecting to 1/8-inch NPTF female ports in air brake and pneumatic systems meeting SAE J844 and SAE J2494 standards.
Installation is performed by fleet mechanics and pneumatic system technicians. Before servicing any air brake line, depressurize the system fully and confirm zero pressure before disconnecting or inserting fittings. Ensure tubing is cut cleanly and squarely and is free of burrs before inserting into the push-to-connect collet. Verify the NPTF port threads are clean and undamaged before hand-tightening the fitting; follow applicable DOT and SAE guidelines for air brake circuit service.
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