What does HV before the valve mean?

2018-12-12View Original

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What does HV before the valve mean?

Reply #22018-12-12

Look at page one of the diagram, the legend annotations

Reply #32018-12-12

It depends on the legend, I guess~ https://bbs.hcbbs.com/thread-1087825-1-1.html You can take a look at this post

Reply #42018-12-12

The legend should be followed; generally, it is a manually controlled valve, which means that the opening or closing of the valve can be controlled manually from a distance

Reply #52018-12-12

Manual control valves generally do not participate in PID regulation

Reply #62018-12-12

The common practice is to have HV manually adjustable

Reply #72018-12-13

It can be turned on or off remotely, but cannot be adjusted manually

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