What are flap valves, suction relief valves, and how are they used?
Flap valves serve two basic functions: (a) closing the discharge pipe to facilitate priming of the pump, and (b) obstructing the return of slurry to dredge upon shutdown of the dredge pump Suction relief valves are mounted as close to the suction mouth of the suction line as is practical. It can be opened manually to allow extra water into the slurry, or automatically if the suction or discharge lines begin to plug, as measured by vacuum and pressure sensors. The suction relief can also be connected to a Production Meter System to help keep at a consistent level of production.
