Pro-source 2556051665PRO Push-to-connect Tube Fitting 5/16in

Product Description

The PRO-SOURCE 2556051665PRO is a push-to-connect tube-to-tube fitting designed for fast, tool-free connections in compressed air and water systems. Constructed from nickel-plated brass, it accepts 5/16 inch outside diameter tubing and holds a maximum working pressure of 250 psi. The Buna O-ring seat provides a reliable seal across a wide service temperature range of 0 to 160 degrees F. This fitting is installed by plumbers, HVAC technicians, and industrial maintenance professionals who need quick, repeatable tube joints without threaded fittings or soldering. Each package contains 5 fittings.

This fitting is suited for light commercial and industrial plumbing, pneumatic, and compressed air distribution lines where 5/16 inch OD tubing is used. Typical applications include refrigeration equipment, pneumatic control circuits, water distribution manifolds, and instrumentation lines. The push-to-connect design allows rapid installation in tight spaces or high-volume service environments where minimizing downtime matters. Compatible fluids include compressed air and water.

Key Features

• Push-to-connect design allows tool-free tube insertion and secure hold without ferrules or threaded connections
• Nickel-plated brass construction resists corrosion in air and water service
• Rated to 250 psi maximum working pressure
• Buna O-ring provides dependable sealing across 0 to 160 degrees F service range
• Accepts 5/16 inch OD tubing for tube-to-tube inline connections
• Sold in a package of 5 fittings to support multi-point installation jobs

Compatibility

Designed for use with compressed air and water systems using 5/16 inch outside diameter tubing. Suitable as a direct push-to-connect tube-to-tube inline fitting in pneumatic and plumbing assemblies.

Installation Notes

Installation is performed by plumbers or pneumatic system technicians. Before servicing any fitting in a pressurized line, isolate and depressurize the system completely and shut off the fluid supply. Ensure tubing ends are cut cleanly and squarely with a tube cutter before insertion to achieve a proper seal. Follow applicable IPC or local plumbing codes when installing in potable water service.