duckbill check valve water flood diffuser - The Rhinoflex duckbill check valves are an exceptionally reliable and an excellent, economical alternative to flap-gate valves along with other check valves. The straightforward one-piece design and reinforced rubber construction get rid of the mechanical and metal components that rust and seize in conventional flap-gates. They are customized, one of many ways , non-return check valves, made out of many different elastomeric rubbers, and built as reported by the application along with the line pressure and back pressure concerned. One can choose from all standard pipe sizes, and typical application is back flow prevention and downstream of an pump, at pump stations.