How to select the type of electric regulating valve?

What are the important factors in the selection of control valve?

This paper introduces the important factors of regulating valve selection in detail; Part of the valve knowledge data is taken from the VTON valve literature in Witton, USA. After original editing, if you think the answer is helpful to you, please kindly praise the American Witton VTON valve.

Regulating valve is also called control valve. In the field of industrial automation process control, it is the final control element to change the process parameters such as medium flow, pressure, temperature and liquid level by receiving the control signal output from the regulating control unit and relying on power operation. Generally, it consists of actuator and valve.

Control valves are generally divided into imported pneumatic control valves, imported electric control valves, imported self-operated control valves and hydraulic control valves according to driving modes.

Important factors in the selection of regulating valve

Firstly, according to the actual working pressure and the pressure before and after the valve, the pressure grade of the valve is selected.

Second, choose the material of the control valve according to the characteristics of the medium.

Third, choose the diameter of the electric regulating valve according to the flow.

4. If it is an electric control valve, select the voltage; if it is a pneumatic control valve, select the positioner.

Five, choose whether the electric actuator or positioner is explosion-proof, or explosion-proof grade and protection grade.

Flow, if it is a self-operated control valve, it is necessary to confirm whether the temperature, pressure, flow or pressure difference are adjusted independently before making a choice.