Parker A5MRS4-MG Male Swivel Run Tee 5/16 in Od 1/4 in Nptf

Product Description

The PARKER A5MRS4-MG is a push-to-connect male swivel run tee tube fitting designed for quick, tool-free tube connections in pneumatic and fluid-handling systems. Constructed from polyoxymethylene (POM), a high-strength acetal resin, this fitting delivers a rated working pressure of 300 psi and is well-suited for applications where corrosion resistance and dimensional stability are required. The male swivel run tee configuration allows a threaded port to branch off a straight tube run, simplifying circuit layout without additional adapters. Licensed plumbers, HVAC technicians, and industrial maintenance technicians are the primary installers.

This fitting is used in light-duty pneumatic lines, compressed air distribution, and low-pressure fluid circuits found in residential and commercial HVAC equipment, refrigeration ancillaries, and general industrial machinery. The 5/16 inch OD tube connection accepts standard 5/16 inch outside-diameter tubing, while the 1/4 inch NPTF male thread provides a pressure-tight mechanical seal at the equipment or manifold port. Its compact gray POM body keeps weight minimal at 0.05 pounds, making it practical in tight panel or cabinet installations.

Key Features

• Push-to-connect design allows fast, tool-free tube insertion and removal
• Male swivel run tee configuration lets the threaded port rotate during installation, reducing torque transfer to connected tubing
• Rated to 300 psi working pressure for reliable performance in compressed air and fluid circuits
• Polyoxymethylene (POM) body resists moisture, oils, and common cleaning agents
• 1/4 inch NPTF thread provides a dry-seal mechanical connection without requiring additional sealant tape in many applications
• Lightweight at 0.05 pounds — suitable for space-constrained installations

Compatibility

Designed as an OEM-style replacement or new-installation fitting for pneumatic and low-pressure fluid systems using 5/16 inch OD tubing with a 1/4 inch NPTF threaded port connection.

Installation Notes

Installation should be performed by a qualified technician familiar with pneumatic or plumbing system codes applicable to the jurisdiction. Depressurize and isolate the 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 collet. Verify thread engagement and system pressure integrity with a leak-detection solution before returning the system to service.