Sea Tech 81902975 1/2 CTS Quick-Connect Tee Fitting

The Sea Tech 81902975 is a 1/2-inch CTS (Copper Tube Size) quick-connect tee fitting designed for fast, tool-free plumbing installations in marine, RV, and residential water systems. This three-port tee allows a single water line to be split into two directions without the need for crimping, soldering, or special installation tools.

Sea Tech's push-to-connect design features stainless steel gripping teeth in the collet that securely lock onto tubing upon insertion, creating a leak-free seal. Because the fitting connects on the outside of the tubing rather than using an inner barb, water flow capacity is significantly improved compared to traditional barbed fittings. Once connected, the fitting also rotates under pressure, allowing for easy line routing and alignment adjustments after installation.

Key Features:

• 1/2-inch CTS (Copper Tube Size) — compatible with 5/8" O.D. tubing
• Tool-free quick-connect installation — simply push tubing in to create a secure connection
• Compatible with plastic (PEX), copper, CPVC, LDPE, MDPE, and HDPE tubing
• Stainless steel gripping collet for corrosion-resistant, multi-material compatibility
• Rotates under pressure for flexible routing in tight spaces or dynamic applications
• Outer-connect design increases flow capacity vs. traditional barbed fittings
• Tee configuration for splitting or combining water lines
• Rated for both hot and cold potable water applications
• Manufactured in polysulfone — a high-performance, thermally stable engineering plastic
• Certified to NSF-61, NSF-14, CSA B137.5, and ASTM F877 standards

The Sea Tech 81902975 tee is ideal for marine freshwater systems, RV plumbing, and any application requiring a reliable, leak-free branch connection. Tees can be snapped together with elbows and other Sea Tech fittings to create compact mini-manifold configurations, reducing the amount of tubing and fittings required.