A reverse-acting proportional controller will be used to maintain level in a water storage tank by positioning an air-operated makeup water flow control valve.
The level controller receives input from a direct-acting level detector.
Which pair of flow control valves shown below will be compatible with the level controller in the above application?
A. A and B
B. B and C
C. C and D
D. D and A
Show Answer
Answer: B
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