Electric actuator VS pneumatic actuator: advantages and disadvantages of electric and pneumatic actuators for industrial valve
Industrial application shall request a large quantity of actuatuation for valves. The most common types are electic actuators and pneumatic actuators. How we select the correct one? Here we provide a list of comparison:
Pneumatic actuator | Electric actuator | |
Power source | air | Electric |
Response time | Quicker | Slower |
Medium of pipes | Liquid in small diameter pipe & gas | Gas in large diameter pipes & liquid |
Accuracy | lower | Higher |
sensibility | Lower | Higher |
Maintenance | Lower | Higher |
Control system | More complex with multiple accessories | Integral |
Environment factor | If air source contains the water, the driving system will fail | Not suitable in damp environment |
Safety & reliability | Higher, and also need stable air supply | Less higher, sometimes there occurs jam |