Cut off or limit the flow of the pipeline. There are rare single ram, double ram, parallel and other structures. Of course, you should know that the electric butterfly valve is characterized by very fast opening and closing speed, simple structure, low cost, and poor tightness and pressure bearing capacity. However, the characteristics of ball valves are very similar to those of gate valves, which can be limited by volume and opening and closing resistance. Many large caliber valves are difficult to achieve. Therefore, electric butterfly valves need to be driven by clip turbine hard seal butterfly valves, which are not flange type, and have not yet eliminated the effect of water hammer. This is to solve the extrusion problem of disc plates and valve seats of concentric electric butterfly valves. Therefore, a single eccentric electric butterfly valve can be produced, and the structural feature is that the valve stem axis will deviate from the center of the disc plate, so that the upper and lower ends of the disc plate will not become the rotation axis and disperse, reducing the problem of excessive extrusion between the upper and lower ends of the disc plate and the valve seat. 　　　　

2. The three-dimensional eccentric sealing system is used, and the system has been optimized to reduce the opening resistance of the valve. Since the sealing surface of the butterfly plate is a conical sealing surface, all points on the circumference of the butterfly plate will be separated from the sealing ring at the same time when it is opened, which will make it difficult to retain solid media on the sealing surface, while the valve is closed by pressing the sealing ring.