Spring return pneumatic actuator of Jimai is specially designed for the safety and automation considerations.When the air is input, spring return pneumatic actuators open the valve, which will automatically closes when there is no air supply. Generally, spring return pneumatic actuators are classified as normally open and normally close type. Normally open needs to supply the air pressure to get the close stage, whereas the normally close needs air supply to reach the opening. We offer the whole spectrum of spring return pneumatic actuators worldwide and continue to prioritize the demands of our customers.