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English Translations » 【仪表自控交流圈】 » I have a question regarding electric valves

I have a question regarding electric valves

2017-04-17View Original

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On thermal engineering drawings, some electric valves are denoted by CV, while others are denoted by MV; for example, CV1111 and MV1111. What is the difference between them?
Reply #22017-04-17
You can check the PID instructions or paste the PID diagram; I guess one involves logical control while the other allows for remote manual operation
Reply #32017-04-17
CV1111: Control valve that forms part of the control circuit; MV1111: Control valve that can only be operated manually.
Reply #42017-04-17
CV1111: Control valve that forms part of the control circuit; MV1111: Control valve that can only be operated manually.
Reply #52017-04-17
This needs to be explained using a legend. Most elements are universal, but there are some differences among different legends
Reply #62017-04-17
Why should one read the PID explanation when looking at thermal engineering drawings?

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Translated at 2026-07-21 02:48:20

Original: https://bbs.hcbbs.com/thread-1771077-1-1.html

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