How to adjust the pneumatic actuator switch is not in place

The pneumatic actuator switch is not in place, generally referring to the failure of the supporting valve product switch is not in place, how to adjust? The matching valve of the pneumatic actuator, such as the pneumatic cut-off valve, generally has a certain amount of leakage during use. If the leakage exceeds the standard specified value, it is easy to lead to quality problems such as the switch cannot be closed. Therefore, we must understand the permissible standards for leakage and correctly use pneumatic actuator products.

If it is not the above leak, you can check the valve and valve stem for foreign matter stuck. If you need to deal with it as soon as possible, you also need to check whether the range adjustment of the electrical positioner is not enough, whether the pressure difference before and after the pneumatic cut-off valve is too large, whether there is a problem with the selection, whether the output force of the pneumatic actuator is too small, you can increase the effective output pressure (+PF) to increase the output force. For the air shutoff valve, the regulator rotates to the left (release), that is, the Po~PL moves forward, but note if the full stroke changes. The above is the fault cause and adjustment method of the pneumatic actuator switch is not in place. I hope this is helpful.