Common faults of pneumatic control valve
Pneumatic control valve uses compressed air as the power source, cylinder as the actuator, and drives the valve with the help of valve positioner, converters and other accessories to realize switching or proportional adjustment, and accepts the control signal of the industrial automation control system to regulate flow, pressure, temperature and other process parameters of the fluid in the pipeline. At present, pneumatic control valves are widely used in petrochemical, electric power, metallurgy and other process industries, and are an indispensable and important tache in the control system. Therefore, it is very important to ensure the stable and reliable operation of the pneumatic control valve. When the pneumatic control valve fails, it can be checked according to the common faults of the control valve, to find the reason of the fault in time.