The difference between air valve and electric ball valve
Under what circumstances is it necessary to use electric ball valves instead of air, and also, under what circumstances is it necessary to use air ball valves instead of electric? What are their advantages and disadvantages?
The working distance of the gas valve is larger than that of the electric valve. The working speed of the gas valve switch is adjustable. The electric valve is complicated, and the electric ball valve works with electricity, so it is not suitable for explosion-proof requirements. For example, when a large amount of flammable gas is dispersed in the surrounding environment, it can only rely on air. The response time of the air valve is slower than that of the electric valve, which is not as good as Electric is accurate, and the air valve is powered by gas. On the other hand, the electric ball valve is powered by the conversion from electricity to electromagnetic energy. The sensitivity of the electric valve is higher than that of the air control valve, and its safety and reliability are not as strong as the air control valve. Valve control is simple.
The control of the air valve is more complicated than the electric valve, and the cost is also high. When it comes to automatic control, it is necessary to add an electromagnetic switching valve. The sensitivity of the electromagnetic switching valve directly affects the air valve. As long as there is electricity, the electric valve can be used. In some factories, many tools And the equipment uses compressed air. In this case, a pneumatic valve may be used, because there are ready-made things. Many companies with high responsiveness, safety and reliability, and high control requirements have dedicated compressed air stations for pneumatic component control components. Electricity requires electricity, and gas valves are obviously better than electric valves, but please use electric valves in places where gas sources are inconvenient, and do not use electric valves in places where there are gas sources.
Do you need to pay attention to the installation of electric ball valves?
1. The maintenance of the electric ball valve includes the preparation before installation, the installation of the air line ball valve, the inspection after the installation of the air line ball valve, and the maintenance of the air line ball valve.
2. The electric ball valve rusts during use. After metallographic analysis, dyeing test face, heat treatment test face, SEM and other test analysis, it is found that the important factor for the rust of the material is because the carbide precipitation along the grain boundary in the material has formed Chromium-depleted area valve, gate valve, globe valve, ball valve, thus completing the installation of the electric ball valve According to the requirements of the pipeline pressure design, after passing the air pressure, check the sealing performance of the joint surface of the air pressure pipeline ball valve and the pipeline flange.
3. In order to ensure that the piping at the installation position of the trachea ball valve is in the coaxial position, the two flanges on the piping must be parallel. Confirm that the piping can bear the weight of the trachea ball valve itself. If it is found that the piping cannot bear the weight of the trachea ball valve, the piping must have corresponding support.
That’s all for today’s introduction, thank you for watching and hope it will be helpful to everyone.
Post time: Dec-03-2022