For the gate valve, the gate plate vertically moves along the axis of the passageway to open or close the passageway. In pipeline, the gate valve is mainly used to fully cut off or connect the medium, but is not preferably used for throttling. Generally, the gate valves can be widely applied in the pipelines for petroleum, chemical product, firepower station, etc. to cut off or connect the medium, and the gate valves configured with pneumatic or electric actuators, etc. can be used to realize remote operation.More