Flat gate valve flow resistance is small, not shrink its flow resistance and short tube flow resistance is similar. Plate gate with guide hole installed in the pipeline can also be directly pig pigging. Its gate slides on the two valve seat faces. The flat gate valve can be applied to the media with suspended particles. The sealing face of the flat gate valve is actually automatically positioned. Seat sealing surface is not subject to thermal deformation damage. And even if the valve is closed in a cold state, the thermal expansion of the valve stem will not overload the sealing surface. At the same time when the valve is closed, the gate valve without a guide hole also does not require a high degree of precision in the closing position of the gate plate. Therefore, the electric plate valve can control the opening and closing position by the stroke.
