Aren’t pneumatic actuators overly expensive?
Pneumatic actuators are powered by compressed air. The compressed air is produced by a compressor. Electromechanical valve actuators draw their power from the mains supply. Comparing the operating costs (power costs) of these two forms of actuators shows the cost advantages of the pneumatic actuators. From the point of view of cost, it is important to design the compressed air system (compressor and reservoir) to suit actual requirements.