The wedge rigid gate is an integral wedge-shaped gate with an inverted T-shaped groove on the upper end of the gate, which is connected to the valve stem through the inverted T-shaped groove. The sealing surfaces on both sides of the wedge-shaped gate are sealed with the valve seats on both sides respectively. The inverted T-shaped groove of the gate and the valve stem are movably connected, which can compensate for the errors caused by processing, so that the sealing surface of the gate and the sealing surface of the valve seat fit together better and complete the sealing.

The wedge elastic gate is based on the rigid single gate, and an annular groove is machined on the vertical bisecting surface of the gate, and only the center of the gate is connected together. The gate sealing surface has a certain elastic deformation capacity. When the gate is closed, the deviation of the wedge angle between the gate sealing surface and the valve seat sealing surface can be compensated, thereby ensuring the sealing surface effect.

The wedge gate valve has a low accuracy requirement for the sealing surface angle, and temperature changes are not easy to cause wedging. When the sealing surface is worn, a gasket can be added for compensation.

The valve body of the wedge gate valve is provided with a guide mechanism (guide rib) to prevent the gate from rotating when opening or closing, and ensure that the sealing surface of the gate and the valve seat are aligned accordingly.