The difference between double acting pneumatic actuator and single acting pneumatic actuator

Pneumatic actuators are divided into double-acting and single-acting. The cost of single-acting is higher than double-acting. Single-acting pneumatic actuator valve (pneumatic actuators have a spring inside. When the air source is disconnected, the spring will automatically reset to provide power to make the ball valve. Return to the initial open or closed state), if you choose a double-acting actuator, the actuator loses power when the air source is disconnected, and the valve position remains at the position where the gas was lost. If the valve needs to be automatically reset in the event of gas loss, the single-acting actuator should be selected. If it is not required, the double-acting actuator is the right choice.