Does Hefei electric sanitary butterfly valve need water for opening? First of all, it must be clear that the manual devices of pneumatic valves are basically handwheel structures, which are generally installed at the side or top according to customer needs. The reason why manual operation is configured is mainly because when using the pneumatic switch ball valve, it is easy to cause problems such as air source disconnection, actuator failure, etc. If the valve is not equipped with a hand wheel mechanism, it is easy to cause problems in an emergency and difficult to deal with. With the hand wheel installed, even in some critical situations, the valve can be opened or closed manually according to the working conditions, which can save some unnecessary losses.
、 1. The top of the piston actuator is connected to the viewfinder. When the pointer points to the word "open", it means that the valve has been successfully opened.
