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The LEGRIS 0104 14 00 is a brass compression tube union designed to join two tube runs in fluid or pneumatic systems. It connects using tube OD on one end and tube ID on the other, creating a secure, leak-resistant joint without soldering or threading. Built from brass, this union handles working pressures up to 652 psi and temperatures ranging from -40 degrees F to 250 degrees F. It is a standard single-piece fitting suited for plumbing, hydraulic, and compressed-air applications where a reliable inline connection is required. Licensed plumbers and mechanical contractors are the primary installers.
This compression union is appropriate for residential and light commercial installations involving copper or compatible tubing. It suits inline repair or extension work in plumbing supply lines, pneumatic control circuits, and fluid distribution systems. The 14mm outside diameter sizing targets metric tube runs common in imported equipment and European-spec systems. The fitting is sold individually and is a direct stocking replacement for standard compression union applications.
Designed as an OEM-style replacement compression union for inline tube connections using 14mm outside diameter tubing in plumbing, pneumatic, and fluid distribution systems.
Installation is performed by a licensed plumber or qualified mechanical technician. Shut off system pressure and depressurize the line completely before disassembling any compression fitting. Ensure tube ends are cut square and deburred before seating into the union body to maintain a leak-free joint. Follow applicable IPC or local plumbing code requirements for compression fitting use in pressurized systems.
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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