How To Choose The Correct Electric Actuator Valve?

In pipeline engineering, the correct selection of the electric actuator valve is one of the guaranteed conditions for meeting usage requirements. If the electric actuator valve used is improperly selected, it will not only affect the use but also cause adverse consequences or serious losses. Therefore, electric valves should be selected correctly in pipeline engineering design.

Working Environment Of Electric Actuator Valve

In addition to paying attention to the pipeline parameters of electric-operated valves, special attention should be paid to the environmental conditions in which they work, because the electric device in the electric drive valve is an electromechanical device, and its working conditions are greatly affected by its working environment. Normally, the working environment of electric actuator valves is as follows:

1. Indoor installation or outdoor use with protective measures;

2. Installed outdoors and exposed to wind, sand, rain, dew, sunlight, etc.;

3. In an environment with flammable or explosive gas or dust;

4. Environment in humid tropics and dry tropics;

5. The pipeline medium temperature is as high as 480℃ or above;

6. The ambient temperature is below -20℃;

7. Easily flooded or immersed in water;

8. Environment with radioactive materials (nuclear power plants and radioactive material testing facilities);

9. Environment on ships or docks (with salt spray, mold, moisture);

10. In situations with severe vibration;

11. Situations prone to fire;

Choose The Right Electric Valve Actuator

For electric actuated valves in the above environment, their electric device structures, materials, and protective measures are different. Therefore, the corresponding valve electric device should be selected according to the above working environment.

According to engineering control requirements, for electric valves, the control function is completed by electric devices. The purpose of using electric valves is to achieve non-artificial electrical control or computer control of the valve’s opening, closing, and adjustment linkage. The current use of electric devices is no longer just for saving manpower. Since the functions and quality of products from different manufacturers vary greatly, the selection of electric devices and the selection of matching valves are equally important to the project.

Electric Control Of The Electric-Operated Valves

As the requirements for industrial automation levels continue to increase, on the one hand, the use of electric valves is increasing, and on the other hand, the control requirements for electric valves are becoming higher and more complex. Therefore, the design of electrical control of electric valves is also constantly updated.

With the advancement of science and technology and the popularization of computers, new and diverse electrical control methods will continue to appear. Considering the overall control of the electric valve, attention should be paid to the control method of the electric valve. For example, depending on the needs of the project, whether to use centralized control or single-unit control, whether to link with other equipment, program control or application of computer program control, etc., the control principles are different.

The valve electric device manufacturer’s sample only provides standard electrical control principles, so the user department should conduct technical briefings with the electric device manufacturer to clarify technical requirements. In addition, when choosing an electric valve, you should consider whether to purchase an additional electric valve controller. Generally, the controller needs to be purchased separately. In most cases, when using a single control, you need to purchase a controller, because purchasing a controller is more convenient and cheaper than designing and manufacturing it yourself. When the electrical control performance cannot meet the engineering design requirements, modification or redesign should be proposed to the manufacturer.