The electric isolation valve appeared earlier. In the 1920s or so, the better part of this electric valve is that you don’t need to pay too much attention to it, because it is different from the manual diaphragm valve. It is electric and can be operated. It won’t be too much effort, and it’s not difficult to keep it. It’s the general enterprise that chooses this kind of electric product.
The same as ordinary diaphragm valves. Many electric parts are anti-corrosion, so there is no need to change the parts frequently. Moreover, electric products are not too expensive in this era. Therefore, more companies will choose this kind of diaphragm valve that can replace manpower to reduce labor costs. There are also laborers to improve labor efficiency and speed up the production speed of enterprises.