Sea Tech Union Connectr 3/4 Copper Tube

Splice two runs of 3/4-inch CTS tubing together in seconds with the Sea Tech Union Connector (ST07UC) from Watts Water Technologies. This straight push-to-connect coupling joins tubing end to end with no tools, solder, or glue, making it the quick, reliable choice for extending or repairing the larger supply lines found in whole-house plumbing and water-treatment systems where flow and pressure matter.

The connector is built on the proven Sea Tech AquaLock platform, which uses a corrosion-resistant stainless steel gripper ring to grab and hold the tubing securely. That gripper ring interlocks with PEX, copper, and CPVC, all without tools, so a single fitting handles whatever material your run uses. A locking clip provides added security, and the patented zero-leak O-ring guide protects the O-ring during insertion, aligning the tubing and keeping the seal in place as you push the fitting home.

• Straight union connector for 3/4-inch CTS tubing
• Tool-free push-to-connect installation in seconds
• Stainless gripper ring grips PEX, copper, and CPVC
• Locking clip and zero-leak O-ring guide for secure, sealed joints
• No stiffeners required on copper and CPVC, preserving full flow
• Connect and disconnect for flexible, reworkable plumbing
• One fitting works across multiple tubing materials

On larger 3/4-inch lines, a failed or restricted splice has a bigger impact than it would on a small branch, because these runs carry the main flow to softeners, filters, water heaters, and entire fixture groups. A connector that joins the line cleanly and preserves full bore is exactly what these service lines need.

With no flow-restricting stiffeners needed on copper and CPVC, the 3/4-inch connector maintains full flow and adds no head loss, keeping pressure strong on demanding service lines throughout the home. And because the joint can be disconnected and remade without tools, correcting a measurement or reconfiguring a layout is effortless. For plumbers and water-treatment installers working in the 3/4-inch size, this Sea Tech union connector is a dependable, time-saving way to make a clean, leak-free splice. Quick to install and easy to rework, it is a connector that earns its place in any installer's kit for the larger supply lines that carry the main flow throughout a home or facility.