Sea Tech Union Tee, 1/2 Copper Tube

Branch off a 1/2-inch line in seconds with the Sea Tech Union Tee (ST05UT) from Watts Water Technologies. This push-to-connect tee splits a single 1/2-inch CTS run into two, creating a clean takeoff for fixtures, appliances, or water-treatment accessories without solder, glue, or tools. It is the fast, modern way to add a branch wherever a plumbing or treatment system needs to feed an additional point.

Every Sea Tech AquaLock fitting is engineered around a corrosion-resistant stainless steel gripper ring that grabs and holds the tubing firmly. The same tee works with PEX, copper, and CPVC, all without tools, which keeps your fitting inventory simple and your installs quick on every job. A locking clip provides extra connection security, while the patented zero-leak O-ring guide protects the O-ring during insertion, aligns the tubing, and keeps the seal from being dislodged as the fitting is pushed home.

• Union tee splits a 1/2-inch CTS line into a branch connection
• Tool-free push-to-connect assembly on all three ports
• Stainless gripper ring grips PEX, copper, and CPVC
• Locking clip and zero-leak O-ring guide for dependable, sealed joints
• No stiffeners needed for copper and CPVC, maintaining full flow
• Reworkable: connect and disconnect for flexible layouts
• Compact body fits neatly into tight plumbing runs

Adding a branch to an existing line traditionally meant cutting the pipe, fitting a tee, and soldering or cementing three separate joints, a process that takes time and introduces multiple chances for a leak. The push-to-connect union tee collapses that whole operation into a few seconds of work with no curing time and no open flame.

Because copper and CPVC connections require no flow-restricting stiffeners, this tee preserves full flow with no extra head loss across all three branches, keeping pressure strong wherever it distributes water. That makes it ideal for feeding treatment equipment, accessory lines, or additional fixtures. For installers who want speed without sacrificing reliability, the Sea Tech 1/2-inch union tee delivers leak-free branching that goes together in moments and can be reconfigured just as easily later on. Whether feeding a new fixture or tying in treatment equipment, this union tee delivers a clean, full-flow branch in seconds and gives installers the freedom to reconfigure the system whenever needs change.