Seeking advice on issues with double-acting valve positioners
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For a double-acting positioner, the air circuit has one input and two outputs. I would like to know whether air is supplied to both outputs at any valve position, or only to one of them
Theoretically, as long as it’s not in the fully open or fully closed position, both circuits will have air pressure. This is necessary to maintain stable valve position.
As long as it is not in the fully open or fully closed position, both circuits have air pressure. This is necessary to maintain stable valve position.
This can be set to single-acting
Both paths have output; when both are turned on or both are turned off, it can be considered that the other path also has output, but the output value is 0