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Causes and solutions to common failures of pneumatic ball valves, kle-valve Wuxi Clariant Fluid Pneumatic Ball Valve Common failures of pneumatic ball valves include the actuator not moving, the actuator moving, but the torque is not enough, the pneumatic ball valve can switch, but the movement is slow when opening or closing, the actuator moves normally, but the valve does not move, the actuator moves normally, but the valve switch cannot be in place. These problems must be investigated and resolved promptly to avoid delaying normal work progress. Below, the editor will give you a detailed introduction to the causes and solutions of common failures of pneumatic ball valves. 1. Reasons for the actuator not operating 1. Check whether the air source pressure of the inlet and outlet air filter pressure reducer reaches the rated value. Adjust the air source pressure or replace the air filter pressure reducer according to the situation. ； 2. Check whether the solenoid valve is blocked and whether the ventilation operation is normal. Clean the blockage or replace the solenoid valve according to the situation. ； 3. Check whether the air source pressure entering the actuator reaches the rated value, and check whether the speed controller is blocked. ； 4. Check whether the friction of the valve sealing parts is too large or whether there is air leakage in the sealing ring. 2. The actuator moves, but the torque is not enough. Check the adjusting bolts at both ends of the cylinder, adjust them according to the closing situation, and lock them into the appropriate position. 3. The pneumatic ball valve can be opened and closed, but it moves slowly when opening or closing. Check according to the following conditions: 1. Check whether the speed controller before entering the actuator needs to be adjusted, because as the service life of the valve increases, changes in the process pipeline and the valve itself require the speed controller to be adjusted. ； 2. Check whether there is air leakage in the cylinder. Damage to the O-ring in the cylinder may cause the valve to move slowly. ； 3. Check whether the spring thrust is reduced ； 4. Check whether the cylinder outlet lock valve is sensitive and whether the cylinder exhaust is normal. 4. The actuator operates normally, but the valve does not move. The reason may be: 1. The valve core and valve seat are stuck ； The pipe is clogged ； 2. The connection between the actuator and the valve core is worn or fallen off, etc. 5. The actuator operates normally, but the valve switch cannot be in place. The reason may be: 1. There is foreign matter in the pipeline blocking the valve. ； 2. The medium pressure difference is too large, the rigidity of the actuator is small, and the valve is not closed tightly. ； 3. Caused by failure of the valve body itself: If it is a ball valve, it is usually caused by damage to the sealing surface or leakage from the stuffing box. ； If it is a fluorine-lined or rubber-lined butterfly valve, it is generally due to the deformation of the fluorine or rubber lining. ； If it is a diaphragm valve, the rubber diaphragm is usually damaged. ； If it is a gate valve, the sealing surface may be scratched or the transmission part may be blocked, worn, or corroded. The above is the cause and solution of common failures of pneumatic ball valves introduced by the editor. I hope today’s summary can help everyone. If you have any questions, you can leave a message at the bottom of the website. kle-valve Wuxi Clariant Fluid Control Equipment Co., Ltd. Extended reading: Is there a direction for the installation of the pneumatic ball valve? Schematic diagram of the installation direction of the ball valve. What parameters are required for the selection of the pneumatic regulating valve?_Pneumatic regulating valve_Electric regulating valve_Pneumatic control valve model How to adjust the zero point and range of the pneumatic diaphragm control valve positioner_Pneumatic regulating valve_Electric regulating valve_Pneumatic regulating valve model