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- Time of issue:2021-03-13 15:47:23
The control valve directly regulates the flow of fluid according to the control signal of the regulating instrument, which plays a very important role in the process control system.
The process control system regulator, instrument, etc., use conditions than the direct contact with the fluid control valve is much simpler. Therefore, the control valve should be selected according to the use conditions and purposes.
The selection of control valve items include: structure type, nominal diameter, pressure temperature class, pipe connection, upper valve cover type, flow characteristics, material and actuator, etc. It is extremely important to study each project and the relationship between them.
In order to select the control valve correctly, it is necessary to know all kinds of process parameters of the process control system, as well as the basic conditions of regulating instruments and pipeline connection. The following only describes the basic criteria for the general selection of control valve.
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