Disadvantages Of Flat Gate Valve

When the medium pressure is low, the sealing force of the metal sealing surface is not enough to achieve a satisfactory seal. On the contrary, when the medium pressure is high, if the sealing surface is not lubricated by system medium or external medium, frequent opening and closing may cause excessive wear of the sealing surface. Another shortcoming is that the circular gate that moves laterally on the circular flow path is only more sensitive to flow control when it is at 50% of the valve's closed position. Moreover, the gate will produce severe vibration when cutting off the high-speed and high-density medium flow. If the valve seat is made into a V-shaped port and guided closely with the gate, it can also be used as a throttling valve.