Pneumatic actuators in the field often have corresponding changes due to changes in actual working conditions, such as aging of accessories, aging of parts, replacement of original valves, failure of the gas supply system, etc. When the above changes occur, the valve pneumatic The failure of the actuator will inevitably affect the normal pipeline control. Let’s take a look at how to deal with the slow response of the pneumatic actuator and the vibration of the valve opening and closing?

1. The standard air supply pressure of most pneumatic actuators is 0.4~0.7MPa. First, check whether the air source pressure of the pneumatic actuator is too low. If it is lower than the above-mentioned air supply pressure, it needs to be corrected in time.

2. Check whether the solenoid valve is operating normally, whether the switching is normal, and whether the exhaust is smooth. If the solenoid valve is found to be abnormal in daily inspection, it must be repaired and replaced in time, or contact the manufacturer for maintenance and treatment in time. The longer the delay, the greater the loss.

3. For single-acting pneumatic actuators, if the action is too slow or shakes, be sure to check whether the exhaust side pipeline is blocked, whether the solenoid valve is malfunctioning, and whether the rigidity of the inner spring of the actuator is too small. If the reason cannot be determined, promptly Contact the manufacturer to solve it.

4. Recheck whether the output torque of this type of actuator is consistent with the current valve body. When the rated output torque is less than the required torque of the valve body, there will also be slow movement or shaking. If this happens, replace the valve or Replace the pneumatic actuator model.