Gate valve is by the gate as the opening and closing parts and move along the vertical direction of the seat axis, in order to realize the opening and closing of the valve action. Gate valve main advantages are smooth flow channel, fluid resistance is small, small opening and closing torque; The main disadvantage is that the sealing surface is easy to scratch, the opening and closing time is longer, and the shape and weight are larger. Gate valves are widely used in pipeline and are suitable for making large diameter valves. Gate valves are usually used to interrupt flow and should not be used to regulate flow.
