What are the features of duckbill check valves

Duckbill check valve joints are divided into built-in type and clamp type. Built-in duckbill valve and clamp type duckbill valve consists of duckbill valve body and clamp type, mainly used for drainage and sewage pipeline connection, which acts as a check when conveying media and prevents media from flowing back into the pipeline.

Duckbill valve can effectively prevent backflow backflow and sediment generation, and the previous fixed round pipe outlet is different: duckbill valve jet velocity and outlet flow is a complex non-linear relationship, the test shows that the duckbill valve discharge of sewage to achieve the flow rate required for effective mixing, much smaller than the same mixing required for round pipes, the flow rate of different valve port flow characteristics of various tests, while these tests The data were analyzed to derive a general two-dimensional internal dynamics equation. The results of these tests showed that the use of duckbill-shaped valves resulted in more stable diffusion, along with high jet velocities and high energy, and laser velocimetry was used to study the vicinity of the mixing area of the jet stream at the duckbill valve port, and the results showed that the duckbill-shaped discharge port had better diffusion than the standard circular port. The duckbill valve has the advantages of cushioning, sound-deadening performance, maintenance-free and corrosion-free. It is far better than the flapper door in sealing performance, working performance in harsh environment and improving seawater purification performance, solving the technical problems of traditional flapper door or butterfly check valve due to many mechanical failures poor operating conditions, large leakage, seat wear, parts deformation and corrosion, noise, and the need for frequent maintenance and replacement. Can be described as green environmental protection valve.