• Proven reliability 
• Superior backflow prevention
• Complete turn-key systems

For reliable backflow protection

In 1984, the U.S. Environmental Protection Agency commissioned us to develop and test an alternative to flapgate valves, stating that, “Increasing the reliability and performance of tidegates has a beneficial impact on the general pollution abatement program for the nation’s waterways.” The elastomer “duckbill” Tideflex® Check Valve was specifically designed to eliminate the operational and maintenance problems associated with flapgate check valves, including corrosion of mechanical parts, freezing open or shut, warping and clogging due to trapped debris. The EPA rigorously tested the Tideflex valve for two years and found that Tideflex showed significant improvement over flapgate valves in terms of leakage inflow, entrapment of debris, capability to self clean and susceptibility to marine fouling. Today, hundreds of thousands of Tideflex valves are installed and performing reliably worldwide.

The latest innovation in tideflex check valve technology 

20 years of proven field operation, research and development, and continued engineering enhancements have combined to make the TF-1 today’s most reliable check valve. The bill design is formed in a curve that returns to a closed position every time, achieving the tightest possible seal for backflow applications, particularly at low flow rates. The eccentric flat-bottom design allows installation where the invert of the pipe is close to the floor, and the stronger engineered spine provides long-term performance while handling long-term water weight. When you specify the patented Tideflex TF-1 Curved Bill Check Valve, you’re guaranteed proven record or maintenance-free backflow prevention.