Among various types of valves, gate valves are the most widely used. The gate valve mainly plays the role of cutting off the medium on the pipeline, that is, it is used fully open or fully closed. It can be applied to low temperature and low pressure as well as high temperature and high pressure working conditions, and can be used for various media according to different materials of the valve. The basic structure of the gate valve mainly consists of standard parts such as valve body, valve seat (sealing surface), gate plate, valve stem, valve cover, upper sealing seat, bracket, packing and packing gland, stem nut, handwheel, bolts and nuts. .
Working principle of the gate valve: When the handwheel rotates counterclockwise, it drives the valve stem nut to rotate, and then the valve stem nut drives the valve stem to rise, and the valve stem drives the gate plate to rise upward until the gate plate is fully opened, then the medium at both ends of the valve body channel Circulation; when the handwheel rotates clockwise, the valve stem nut drives the valve stem down, which drives the gate plate down until it is completely closed, and the valve body channel medium blocks the flow.
