The difference between the control valve and the general manual valve is that it cannot be regarded as an isolated element, but it is necessary to consider it as a part of the entire automatic control system. Many problems in the application of the control valve are not the problem of model selection and equipment, but the lack of understanding of the control valve by the user leads to the failure of the control valve to debug and cooperate with the control system. It is only necessary to recognize the key point of the problem, correctly select the valve, and properly debug the control valve in the system commissioning stage, which will greatly reduce the failure rate and make the automatic control system operate stably for a long time.

And when checking the equipment, make sure that the ball valve has stopped working, otherwise the internal air flow, or the fluid involved, will also affect the inspection, and many liquids will move around with the internal air flow, causing damage to other parts inside the pneumatic ball valve, so before checking the problem, cut off the power supply in advance, The inspection can be carried out only after the equipment is completely cooled and still, and the complete separation between the equipment and the support shall be ensured.