Pro-source 2555551865PRO Push-to-connect Tube Fitting

Product Description

The PRO-SOURCE 2555551865PRO is a push-to-connect tube-to-universal-thread tube fitting designed for fast, tool-free tube connections in compressed air and water systems. Constructed from nickel-plated brass, it accepts 5/16-inch outside diameter tubing and threads onto a 1/8-inch universal thread port. The fitting is rated to 250 psi, making it suitable for typical shop air and light fluid-handling applications. The Buna-N O-ring provides a reliable seal against both air and water media. Plumbers, HVAC technicians, and industrial maintenance personnel commonly install this fitting when connecting small-diameter tubing to valves, manifolds, solenoids, or other threaded components.

This fitting is used in residential and commercial applications where 5/16-inch OD tubing must terminate at a universal-thread port. Common install scenarios include pneumatic control lines, instrument air tubing, condensate and water supply connections, and similar low-to-medium pressure service. The push-to-connect design eliminates the need for ferrules, compression nuts, or flare preparation, reducing installation time on new equipment or replacement service calls. It is sold in a package of five units.

Key Features

• Push-to-connect design allows tool-free tube insertion and release
• Nickel-plated brass construction resists corrosion in air and water service
• Rated to 250 psi for compressed air and water applications
• Buna-N O-ring provides a positive seal compatible with both media
• 1/8-inch universal thread port fits a wide range of threaded fittings and ports
• Accepts 5/16-inch OD tubing for a secure, leak-free connection

Compatibility

Designed for use with compressed air and water systems utilizing 5/16-inch outside diameter tubing and 1/8-inch universal thread ports.

Installation Notes

A licensed plumber or qualified HVAC or mechanical technician should depressurize and isolate the system before installing or removing push-to-connect fittings. Confirm tubing OD and wall condition before insertion — cuts must be square and burr-free to seat the collet properly. Do not exceed the 250 psi pressure rating of this fitting. Thread engagement should comply with applicable plumbing or pneumatic system codes for the jurisdiction.