What are the problems that tend to occur in the later stage of duckbill valve?

What are the problems that tend to occur in the later stage of duckbill valve?
In recent years, with the development of science and technology and the emergence of new materials, the rubber part of the duckbill valve has been diversified. The duckbill valve is made of elastic neoprene and artificial fiber by special processing, and its shape is similar to a duckbill. In the absence of internal pressure, the duckbill outlet closes under the action of its own elastic force; as the internal pressure gradually rises, the duckbill outlet gradually increases to keep the liquid discharged at a high flow rate. Duckbill valves have many advantages over the flapper valves and gate valves commonly used in current engineering, and have been widely used in urban, factory drainage and pump station drainage projects. Therefore, the demand for duckbill valves has risen sharply and its market prospect is very broad.
Duckbill valves in the process of use due to improper use and often functional problems: The seal of the duckbill valve joint is prone to leakage. When this phenomenon occurs, first check whether the installation environment is wrong, then check whether the connection between the duckbill valve and the pipeline is correct, and then check whether the connection work at the joint meets the standard of installation requirements. Whether in accordance with the uniform diagonal pressure connection, these details will directly or indirectly affect whether the duckbill valve can be used and operated normally in the later use process.