Norgren 120370406 Push-to-connect Union 1/4 in Od

Product Description

The NORGREN 120370406 is a push-to-connect pneumatic union fitting designed to join two tubes of equal outside diameter in a straight-line configuration. Part of the Pneufit line, this fitting accepts 1/4 inch OD tubing and holds a maximum working pressure of 260 psi. The nickel-plated brass construction provides corrosion resistance suitable for compressed air and inert gas service. The push-to-connect mechanism allows tool-free tube insertion and removal, reducing assembly time in pneumatic plumbing applications. It is installed by pneumatic system technicians, automation maintenance personnel, and HVAC technicians working with control tubing.

This fitting is used in pneumatic control circuits, instrumentation lines, and compressed air distribution systems where a straight union connection is required between two equal-diameter tubes. It is suited for light industrial, commercial HVAC, and automation panel applications. The 1/4 inch OD sizing is common in pneumatic control tubing runs. The fitting handles a temperature range of 0 degrees F to 175 degrees F and carries a vacuum rating of 29.5 inches Hg, making it usable in both pressure and vacuum service applications.

Key Features

• Push-to-connect design allows tool-free tube insertion and release
• Nickel-plated brass body for corrosion resistance in compressed air service
• Rated to 260 psi maximum working pressure
• Vacuum-rated to 29.5 inches Hg for dual-service use
• Operating temperature range of 0 degrees F to 175 degrees F
• Compact overall length of approximately 1.28 inches (32.50 mm) for tight routing

Compatibility

Designed for use with 1/4 inch OD pneumatic tubing in tube-to-tube straight union applications across pneumatic control and compressed air systems.

Installation Notes

Installed by pneumatic technicians or HVAC controls specialists. Always depressurize and bleed the pneumatic circuit before disconnecting or installing fittings. Ensure tubing is cut cleanly and squarely with a tubing cutter to achieve a proper seal with the push-to-connect collet. Inspect tubing OD for scratches or ovality before insertion, as surface defects can compromise the internal seal.