Parker A5UC5-MG Push-to-connect Union Fitting 5/16 in

Product Description

The PARKER A5UC5-MG is a push-to-connect union tube fitting designed to join two lengths of tubing in a straight-line configuration without tools or compression hardware. It accepts 5/16 inch OD tubing on both ends and is manufactured from POM (polyoxymethylene), a rigid acetal resin known for its chemical resistance and dimensional stability in fluid-handling systems. Rated to 300 psi, this fitting is suited for low-to-medium pressure pneumatic and fluid transfer lines. Plumbers, pipefitters, and industrial service technicians use this type of fitting where quick, reliable tube connections are needed in tight spaces or during rapid assembly work.

This fitting is appropriate for use in residential and light commercial fluid or pneumatic systems where 5/16 inch OD tubing is specified. Common applications include compressed air distribution, water treatment equipment, HVAC condensate and control tubing, and similar service lines. The push-to-connect design speeds up installation and allows for easy disconnection during service or reconfiguration of tubing runs.

Key Features

• Push-to-connect design requires no tools, compression nuts, or ferrules for installation
• Accepts 5/16 inch OD tubing on both ends for straight union connections
• POM (polyoxymethylene) construction offers strong chemical resistance and low friction
• 300 psi pressure rating suitable for pneumatic and liquid service lines
• Tan color aids in visual identification during system inspection
• Compact form factor suitable for tight-space installations

Compatibility

Designed as a standard push-to-connect union fitting for use with 5/16 inch OD tubing in pneumatic and fluid transfer plumbing systems.

Installation Notes

Installation is performed by plumbers, pipefitters, or qualified HVAC and industrial service technicians. Before connecting or disconnecting, depressurize and isolate the tubing line completely. Ensure tubing ends are cut cleanly and squarely and are free of burrs before inserting into the fitting to achieve a proper seal. Verify tubing OD matches the fitting specification before assembly, as undersized or oversized tubing will not seat correctly and may result in leaks or fitting failure.