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The LEGRIS 3144 06 06 is a push-to-connect union tube fitting designed for fast, tool-free connections in pneumatic and fluid-handling systems. Built from glass-reinforced nylon, this union fitting accepts 6mm outside-diameter tubing on both ends, creating a straight inline connection. The nitrile o-ring provides a reliable seal rated to 290 psi and a vacuum rating of 28 in-Hg. Weighing approximately 0.09 pounds, the fitting is lightweight without sacrificing structural integrity. It is suited for installation by plumbing, HVAC, and industrial maintenance technicians working with small-bore pneumatic or low-pressure fluid lines.
This union fitting is used in applications requiring a quick inline tube splice or extension without threading or soldering. Typical install scenarios include compressed air distribution lines, pneumatic control circuits, and light-duty fluid transfer systems in both residential and light commercial environments. The push-to-connect mechanism allows rapid assembly and disassembly during service calls, making it practical for field repairs and system modifications where minimizing downtime is a priority.
Designed as an OEM-style replacement or service fitting for pneumatic and fluid-handling systems that use 6mm outside-diameter push-to-connect tubing with a union-style straight connection.
Depressurize and de-energize the system completely before disconnecting or installing any push-to-connect fitting. Ensure tubing ends are cut cleanly and squarely with no burrs before insertion to achieve a leak-free seal. Verify that the tubing outside diameter matches the fitting specification before assembly. This type of fitting is typically installed by qualified plumbing or HVAC technicians following applicable local codes and manufacturer guidelines.
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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