What is the difference between a double acting and single acting positioner? wha

What is the difference between a double acting and single acting positioner? what type of valves use single acting positioners?

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What is the difference between a double acting and single acting positioner? what type of valves use..

Answer / simi susan john

Double acting position er send and exhaust the air at one side of the actuator to position the valve.
Single acting positioner send and exhaust the air at both the sides.

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