Discussion on the design approach for control valve, flow meter, and valve assembly
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Given the large number of high-pressure valve assemblies, in order to reduce costs while enhancing the safety of maintenance work on these control valves, could the second method be used as a substitute for the first? Does anyone have any other good suggestions or relevant standard documents or books?
Is it necessary to install double isolation valves before and after the control valve and flow meter, and what are the relevant standards? ?
Not all of them require a bypass; depending on the actual process, if shutdown for maintenance is necessary, then a bypass is not needed
I’m telling you clearly: this won’t work. Last week I asked several professionals about your issue, and they all said it’s definitely not feasible; it’s not possible to do this during on-site construction. Moreover, the control valve unit must have its own separate bypass, and a flow meter is also necessary. The main issue is that such on-site installation is impossible to carry out.
Okay, thank you very much. I thought about it, and it’s indeed as you said
Control valves operate frequently and are prone to failure; however, they can be repaired online without affecting the system. This is like spending money to obtain protection – in other words, it’s like buying insurance.
You’re welcome; I learned something too. . . ::):):)