GATE VALVE

A?gate valve?refers to a?valve?in which the closing member (gate) moves along the vertical direction of the channel axis. The?gate valve?is mainly used to cut off the medium on the pipeline, that is, fully open or fully closed. Generally, a?gate valve?cannot be used to regulate the flow. It can be applied to low temperature and low pressure or high temperature and high pressure, depending on the material of the valve. It can be applied to low temperature and low pressure or high temperature and high pressure, depending on the material of the?valve. But?gate valves?are generally not used in pipelines that transport mud and other media.

Advantages:

① Low fluid resistance.

② The torque required for opening and closing is small.

③ can be used in annular pipeline network where the medium flows in two directions, that is to say, the flow direction of the medium is not restricted.

④ When fully open, the erosion of the sealing surface of a?gate valve?by the working medium is smaller than that of a?globe valve.

⑤ The shape structure is relatively simple, and the manufacturing process is good.

⑥ The structure length is relatively short.

Disadvantages:

① The external dimensions and opening height are large, and the required installation space is also large.

② During the opening and closing process, the sealing surface is relatively rubbed, and the friction loss is large, even at high temperature, it is easy to cause scratches.

③ General?gate valves?have two sealing surfaces, which add some difficulties in processing, grinding and maintenance.

④ Long opening and closing time.