(1) Generally, gate valves have two sealing surfaces, which are more complex to manufacture than globe valves
(2) There is relative friction between the sealing surfaces, which results in significant wear and makes it inconvenient to repair the worn sealing surfaces
(3) The large size of the valve cavity structure results in a long structural length, large external dimensions, and large installation space, making large-diameter gate valves particularly bulky
(4) Long valve opening and closing time
(5) It can form a closed valve chamber, so a pressure relief structure should be installed when necessary to prevent abnormal pressure rise in the middle chamber
