An important factor of electric pneumatic valve

in pipeline engineering, the right to choose electric pneumatic valve is one of the guarantee conditions meet the application requirements. If improper selection for the application of electric pneumatic valve, not only affect the application, but also the adverse consequences or severe losses, therefore, in pipeline engineering design should correctly choose electric pneumatic valve.
the obligation of electropneumatic valve environment
electropneumatic valve in addition to the pipeline parameters should be paid attention to, still should pay special attention to the obligation of environmental conditions, due to the electric pneumatic valve electric actuator is a mechanical and electrical equipment, in the state of its obligations under the obligation to impact on the environment.
usually state, the obligation of environment of electric pneumatic valve has the following kinds:
indoor device or a protective way outdoor applications.
outdoor device, such as wind, sand, rain, sunshine erosion;
with flammable, explosive gas or dust environment;
tropical humid tropics, dry environment;
pipeline medium temperature can reach above ℃;
the environment temperature below - ℃;
vulnerable to water or flooding;
radioactive substances ( Nuclear and radioactive material test device environment;
on ships or dock ( Have salt spray, mold and humid environment;
have severe vibration occasions; Easy to fire situation;
to the environment of the electric pneumatic valve, the electric device structures, materials and protective measures are different. Therefore, should be based on the above obligations environment choose corresponding pneumatic valve electric device. Electric pneumatic valve function demands
on the basis of engineering control, for electric pneumatic valve, the control function is accomplished by electric actuator. The purpose of the application of electric pneumatic valve, pneumatic valve is to open, closed, and adjust the linkage to complete the artificial electric control or computer control. At present, the electric device application has not only for human diligently. Due to different manufacturers product functionality and quality difference is bigger, therefore, choose and select the pneumatic valve electric actuator are equally important in engineering.

of the electrical control system of electric pneumatic valves due to the requirements of industrial automation level to improve all the time, on the one hand to the electric pneumatic valve are more and more, on the other hand also to electropneumatic valve control requirement is higher and higher, more and more complex. So electropneumatic valve in the design of electrical control aspects are always updated. With the improvement of science and technology of pneumatic valve and the popularization of computer applications, new, diverse electrical control methods will appear. Overall control of electric pneumatic valve, choose electric pneumatic valve control mode should be paid attention to. According to the project need, for example, whether the application of centralized control mode, or single control mode, and other equipment, sequence control and application of computer order control, and so on, its control principle are different. Pneumatic valve electric device manufacturers are only sample standard electrical control principle, so the application department should with the consumption of electric equipment factory technical clarificaiton, clear technical requirements.
in addition, when choosing electric pneumatic valve, to weigh whether additional purchase electropneumatic valve controller. Because of the general status, the controller is need to purchase separately. Most state, using a single control, is the need to purchase of the controller, because the acquisition controller is convenient, inexpensive than users to design and manufacture. When the electrical control performance can't satisfy the engineering design requirements, shall be made to the consumption of plant to modify or redesign.