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The opening and closing parts of the wedge gate valve are the gate, the direction of motion of the gate is perpendicular to the fluid direction. The wedge gate valve can only be fully opened and fully closed and can not be adjusted and throttled. The gate has two sealing surfaces, the two sealing faces of the wedge gate valve usually form a wedge. The wedge angle varies according to the valve parameters, usually 5 degrees. If the media temperature is not high it is 2°52′. The gate of the wedge gate valve can be integrated, called a solid gate. Or it can be made into a gate that can produce trace deformation to improve its manufacturability and make up for the deviation of the sealing surface angle during processing, which is called the flexible gate.