How should the pressure reducing valve be represented in the process flow diagram?
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Recently, in the process flow, I saw that some pressure reducing valves use the icon of a self-operated regulating valve as the representation method of the pressure reducing valve in the flow chart, and some pressure reducing valves use the form of a regulating valve to represent the pressure reducing valve. How should the pressure reducing valve be represented in the process flow chart?
Self-operated regulating valves and general control valves are the two types that can be used as pressure reducing valves. Self-operated regulating valves are relatively simple and cheap, and control valves are used in situations with higher requirements.
Give it a try and ask for the true image. The pressure reducing valves in our unit are all in public works in the boundary area, and there is no flow chart for our reference! Please tell us about your situation. . . . . . . .
In the process flow chart, the form of the pressure reducing valve still corresponds to the form of pressure reduction selected according to the process. If a self-operated pressure reducing valve is used in the process, the illustration of the self-operated pressure reducing valve will be used. If the process uses a regulating valve to control the pressure behind the valve, use the legend of the regulating valve and match it with relevant instruments. The final process flow is mainly determined based on process selection.
The pressure reducing valve can be expressed in the style of a self-operated regulating valve.
I think everything is fine, there are no strict boundaries