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The LEGRIS 3146 12 00 is a push-to-connect tube-to-tube fitting manufactured from nickel-plated brass with a nitrile O-ring seal. It accepts tubing with a 12 mm outside diameter and is rated for a maximum working pressure of 290 psi. The fitting operates across a temperature range of -4 degrees F to 175 degrees F, making it suitable for pneumatic and fluid-transfer lines in demanding service environments. Installation requires no tools for the tube connection - tubing inserts directly into the fitting body and locks in place. Licensed plumbers, pipefitters, and pneumatic system technicians are the typical installers of this component.
This fitting is used in tube-to-tube inline connections on compressed air lines, hydraulic circuits, and industrial fluid systems where a secure, leak-resistant joint is required without threading or soldering. The push-to-connect design suits both OEM assembly applications and field service repairs where quick, reliable connections are needed. The nickel-plated brass construction resists corrosion in moderate-duty environments. It ships individually and is sold in single-unit quantities.
Designed as an OEM-style push-to-connect tube fitting for inline tube-to-tube connections on systems using 12 mm outside diameter tubing in pneumatic and fluid-transfer applications.
Installation is typically performed by licensed pipefitters, plumbers, or pneumatic technicians. Before servicing any line, depressurize the system completely and verify pressure has reached zero before disconnecting or inserting fittings. Ensure tubing ends are cut cleanly and squarely and are free of burrs before insertion to maintain a proper seal. Follow applicable plumbing or pneumatic system codes for the jurisdiction in which the work is performed.
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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