The pinch valves used in vertical filter presses are generally pneumatic pinch valves, which are used to automatically control the flow of fluids. The correction cylinder is a part of the pinch valve, which is usually installed inside the pinch valve to control the flow of fluids.

The correction cylinder is usually made of rubber material, which has good sealing and corrosion resistance. During the operation of the pinch valve, the rubber valve sleeve can withstand high pressure and high temperature environments to ensure the normal flow of fluids in the pipeline.