The parallel double -room gate valve uses two parallel parallel gates and the sealing structure composed of its tight device to replace the traditional wedge valve structure. Each part of the valve sealing mechanism is separated from each other, and even if the temperature changes, the deformation can still be guaranteed, and it will not be squeezed out of the gate due to high temperature expansion.

Due to the effect of wedge blocks when the valve is turned on, the sealing disk and the valve seat are first removed and then rising, which greatly reduces the friction between the seal surface. Therefore, the torque is small, the operation is lightweight, and the service life is long. Large force, poorly wear -out and sealing of the valve cover, short service life, high temperature opening and closing cards and other defects, thereby improving the sealing and service life of the valve.