Pro-source 2556404665PRO Push-to-connect Tube Fitting

Product Description

The PRO-SOURCE 2556404665PRO is a push-to-connect tube-to-universal-thread tube fitting designed for fast, tool-free connections in compressed air and water systems. Constructed from nickel-plated brass, this fitting accepts a 4 mm outside diameter tube and delivers a rated maximum working pressure of 250 psi. The universal thread configuration makes it adaptable to a wide range of port configurations. It is sold in a package quantity of 5 units, making it well suited for service trucks and maintenance stock. HVAC technicians, plumbers, and general mechanical contractors working on pneumatic control lines or water service drops are the primary installers of this fitting type.

This fitting is intended for use with compressed air and water service lines in both residential and light commercial applications. The push-to-connect design eliminates the need for ferrules, nuts, or thread tape on the tube side, reducing assembly time during installation or repair. With a minimum working temperature of 0 degrees F and a maximum of 160 degrees F, it covers the temperature range typical of indoor HVAC pneumatic controls, water supply lines, and compressed air distribution systems.

Key Features

• Push-to-connect tube entry — no ferrule or compression nut required on the tube side
• Nickel-plated brass construction for corrosion resistance and durability
• Rated to 250 psi maximum working pressure
• Universal thread type for broad port compatibility
• Buna O-ring seal for reliable, leak-free performance
• Compatible with both compressed air and water service

Compatibility

Designed for use with 4 mm outside diameter tubing in compressed air and water systems. Universal thread configuration is intended to fit a broad range of threaded ports without requiring a specific thread standard match.

Installation Notes

Installation is typically performed by licensed HVAC technicians, plumbers, or pipefitters. Depressurize and isolate the line completely before removing any existing fitting or inserting this one. Confirm the tube outside diameter is 4 mm and that the tube end is cut cleanly and squarely before insertion into the push-to-connect port. Follow applicable codes including IFGC, IPC, or NEC as they pertain to the system being serviced.