Application and advantages and disadvantages of gate valves

Gate valve refers to a valve whose closing element (gate) moves vertically along the channel axis. It is mainly used to cut off the medium in the pipeline, that is, fully open or fully closed. Generally, gate valves are not used for regulating flow and pressure. Depending on the material of the valve, it can be suitable for low temperature and low pressure, as well as high temperature and high pressure. But gate valves are generally not used in pipelines for transporting mud and other media. Gate valves are mainly suitable for pipelines with various media and have a wide range of operating conditions.The main gate valves product names of China gate Valve Network include:API Bellows gate valve,API Manual Lug&wafer Knife-shaped Gate Valve,API Sprocket Lug&wafer Knife-shaped Gate Valve,API Electric Lug&wafer Knife-shaped Gate Valve,API Bevel Gear Lug&wafer Knife-shaped Gate Valve,API Pneumatic Lug&wafer Knife-shaped Gate Valve,API Cryogenic Gate Valve

Advantages: ① Low fluid resistance; ② The required torque for opening and closing is relatively small; ③ It can be used on ring network pipelines where the medium flows in both directions, meaning that the direction of the medium's flow is not restricted When fully open, the sealing surface is less eroded by the working medium than the shut-off valve; ⑤ The physical structure is relatively simple and the manufacturing process is good; ⑥ The structural length is relatively short.  

Disadvantages: ① The external dimensions and opening height are relatively large, requiring a large installation space; ② During the opening and closing process, the sealing surface is relatively worn, and even prone to scratching at high temperatures; ③ Generally, gate valves have two sealing surfaces, which increases the difficulty of processing, grinding, and maintenance; ④ Long opening and closing time.

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