The control valve is the final element of the control system

therefore, the control valve before running system debugging. System debugging should work
Arts operation with.
1 negative feedback debugging. The control system shall meet the requirements of negative feedback, and should therefore be considered in conjunction with the controller to detect the transmitter and control valve (valve positioner) and the controlled object, and set the controller action and reaction. The negative feedback Standards control system to open the ring gain is positive. Set controller is, after the reaction, in the controller measures ended analog input signal so that it increases or decreases, the observation controller output change meets the requirements of the mode of action, and check the direction of motion of the control valve is correct, whether enables the controlled variable changes to the decreasing direction.pneumatic auto drain
Control valve pressure drop check. The control valve pressure drop check during water simulation debugging. Full stroke during the operation of the control valve, the check across the control valve pressure drop, whether free or flash caused by the noise, traffic changes and whether they meet the design flow characteristics.flange solenoid valve
3 response time checking. Control system control valve response time requirements, you should check the response time of the control valve. Start time, the change of the controller output signal to the control valve position to reach the final steady-state position 63% of the time required is the response time, the time should meet the operational requirements of the process of the production process.