Curved Bill Tideflex TF-1 check valve is designed to enhance sealing, especially in low-lying areas with little backpressure. It is constructed entirely of rubber, making it immune to rust, corrosion and weathering. The valve has a strong spring steel spine, enabling it to handle long-term water weight. Sizes are to 96 in.
Tideflex Technologies; 412/ 279-0044; www.tideflex.com