Install and use
1. Indoor device or outdoor application with protective mode;
2. Outdoor and open-air installation, wind, sand, rain, sunshine and other erosion;
3. Flammable, explosive gas or dust environment;
4. Environment in humid tropics and dry tropics;
5. The medium temperature of the pipeline is as high as 450℃ and above;
6. Ambient temperature below -20℃;
7. Be subject to flooding or flooding;
8. Environment with radioactive material (nuclear power plant and radioactive material test facility);
9. The environment on the ship or dock (salt spray, mold, moisture);
10. Occasions with violent vibration; Occasions prone to fire;
For the electric ball valve in the above environment, its electric device structure, material and protection method are different. Therefore, the corresponding valve electric device should be selected according to the above obligation environment. According to the engineering control requirements, for the electric ball valve, its control function is completed by the electric device. The purpose of the application of electric ball valve is to open, close and adjust the valve linkage to complete non-manual electrical control or computer control. The use of electric devices is no longer just for frugality. Because the function of product of different manufacturer and quality differ greatly, accordingly, choice electric device and choice place match valve are equally important to the project. Because the requirement of industrial automation level rises all the time, on the one hand to electric valve should amount more and more, on the other hand to electric valve control requirement also is higher and higher, more and more complex. So electric valves in the electrical control aspects of the design is always updated. With the continuous improvement of the use of Shanghai Mingbao valve and the popularization of computer applications, new and diverse electrical control methods will always appear. To the electric valve overall control consideration, should pay attention to select the electric valve control mode. For example, according to the engineering needs, whether to apply the centralized control mode, or a single control mode, whether to interact with other equipment, sequence control or the application of computer sequence control, etc., the control principle is different. Only standard electrical control principle is given in the sample of the valve electric device manufacturer, so the application department should make technical disclosure with the electric device consumer factory to make technical requirements clear.
