First, because many layers of soft and hard laminated seal rings need to be fixed on the valve plate, if the valve plate is in the normally open state, of course, this value will cause a positive erosion on the sealing surface. In the interlayer of the metal sheet, the soft seal belt will have an impact on the sealing after being washed. 　　　　

The electric butterfly valve belongs to one of the electric valves and electric control valves, which can be divided into two types: flange type and wafer type. In the control field of industrial automation, the electric butterfly valve has always played a very important role, earnestly performing its own work and tasks. Generally speaking, the actuator that often works together with the electric butterfly valve is a kind of electric actuator with alternating travel, but it works together after installation and commissioning. Finally, we need to know that the electric butterfly valve can be divided into two types according to its own action mode, namely, switching type and regulating type.