What are the characteristics of the valve

Gate valve fluid resistance small, because the valve body internal media channel is straight, don't change the direction of flow medium flows through the gate, so the fluid resistance is small. Open-close torque is small, because when the gate valve opening and closing gate movement direction perpendicular to flow direction of medium, compared with the cut-off valve, gate valve opening and closing of the effort. More suitable for the medium may change the direction of current flow in pipeline. Structure length is shorter, because gate valve gate is vertically placed in the valve body, the cut-off valve disc was put in the valve body level, thus structure length shorter than globe valves. Sealing performance is good, open the seal face less affected by erosion. Sealing surface is easy to damage when opening and closing of disc and seat contact between the two sealing the relative friction, easy to damage, can affect the seals and the service life. Rev. Idle time is long, height is big, because must be fully open or close the valve opening and closing, gate travel, open to a certain space, high dimension. More complicated structure parts, manufacturing and maintenance more difficult, the cost is higher than globe valves.