There are generally two types of control valve maintenance: one is preventive maintenance, which mainly refers to the preventive maintenance measures taken when there is no fault in order to ensure the reliable operation of the control valve, including a series of preventive measures taken when the control valve is installed and used on site; The second is fault maintenance, that is, a series of maintenance work carried out when the control valve can not meet the operation requirements under fault conditions. Generally, it is completed in the production workshop, and it may also be repaired directly on the pipeline under special circumstances.View more +
The regulating valve positioner is the main accessory of the pneumatic actuator. It is used together with the pneumatic actuator to improve the position accuracy of the valve and overcome the influence of stem friction and medium unbalanced force, so as to ensure the correct positioning of the valve according to the signal from the regulator.
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