Pro-source 2559038165PRO Push-to-connect Tube Stem Fitting

Product Description

The PRO-SOURCE 2559038165PRO is a push-to-connect tube-to-stem tube fitting designed for fast, tool-free connections in compressed air and water systems. Constructed from nickel-plated brass, this fitting accepts tubing with a 1/4 inch outside diameter and connects to a stem with a 3/8 inch outside diameter. It is rated to 250 psi and uses a Buna-N O-ring for a reliable, leak-resistant seal. Plumbers, pipefitters, and HVAC technicians install this type of fitting where quick-disconnect access or rapid assembly is required. Each package contains 5 fittings.

This fitting is suited for residential and light commercial plumbing, pneumatic tool lines, and HVAC auxiliary connections where compressed air or water service is present. The push-to-connect design allows tubing to be inserted and locked without threading tools, making it well-suited for tight spaces and high-volume installations. It is commonly used in equipment panels, air distribution manifolds, and water supply lines where 1/4 inch OD tubing terminates at a stem-type port.

Key Features

• Push-to-connect design allows tool-free tube insertion and secure locking
• Nickel-plated brass construction provides corrosion resistance in air and water service
• Rated to 250 psi for use in typical compressed air and water distribution systems
• Buna-N O-ring delivers a durable, leak-resistant seal
• Accepts 1/4 inch OD tubing with a 3/8 inch OD stem connection
• Sold in a 5-piece package for multi-fitting jobs

Compatibility

Designed for use with compressed air and water systems requiring 1/4 inch OD tube-to-stem push-to-connect fittings in nickel-plated brass construction.

Installation Notes

Installation is performed by licensed plumbers, pipefitters, or qualified HVAC technicians in accordance with applicable IPC and IFGC codes. Depressurize and isolate the line before removing or installing any fitting. Verify that tubing OD matches the 1/4 inch spec and that the stem OD matches 3/8 inch before seating the connection. Inspect the Buna-N O-ring for damage prior to assembly to ensure a proper seal.