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The NORGREN M00400300 is a push-to-connect tube-to-tube fitting manufactured from brass. It provides a tool-free, push-in connection between two tube ends in pneumatic and fluid-handling lines. The fitting accepts tubing with a 3mm outside diameter and is rated for a maximum working pressure of 150 psi. Its nitrile O-ring provides a reliable seal across a working temperature range of 0 degrees F to 175 degrees F. Plumbers, HVAC technicians, and pneumatic system installers use this type of fitting where fast, leak-free connections are needed without threaded fittings or compression tools.
The M00400300 is suited for light industrial and commercial pneumatic plumbing applications where small-diameter tubing connects control components, actuators, or instrumentation. Its compact form factor and push-in design make it practical in tight panel installations and instrumentation enclosures. The brass body resists corrosion in both dry and lightly lubricated air service as well as compatible fluid lines operating within the rated pressure and temperature limits.
Designed as an OEM-style replacement or new-installation fitting for pneumatic and fluid-handling systems using 3mm outside diameter tubing operating within the rated pressure and temperature range.
This fitting is typically installed by HVAC technicians, pneumatic system technicians, or plumbers working on low-pressure control and instrumentation lines. Before service, depressurize the system fully and confirm the line is free of fluid pressure. Ensure tubing is cut cleanly and squarely and deburred before insertion to maintain a proper O-ring seal. Follow applicable pneumatic and fluid-system codes for the installation environment.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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