Electric butterfly valve, including electric device, valve body, the head of the valve body and the electric device are equipped with a normally closed embedded electromagnetic clutch, and the rotating shaft of the valve and the output shaft of the electric device are connected through the normally closed embedded electromagnetic clutch. The tail of the valve body is equipped with the normally open embedded electromagnetic clutch, swing arm, heavy hammer and short shaft. The swing arm and the short shaft are connected by keys, and the short shaft and the valve rotating shaft are connected by the normally open embedded electromagnetic clutch. The beneficial effect of this product is that the electric valve can be opened or closed quickly when the power is lost, with simple structure and high safety of the system.

Splint type electric butterfly valve, including valve body and electric device, the valve body is equipped with a valve stem and valve plate, the upper end of the valve stem extends out of the valve body and is connected with the electric device; The electric device includes the electric driving head and connecting end. The upper end of the valve stem is connected and fixed with the connecting end of the electric device through screws. Rubber ring is arranged between valve plate and valve body sealing surface.

The upper and lower ends of the valve body of the product are provided with outer convex connecting floor, and there are two bolt holes on the connecting floor. Compared with the existing technology, the upper and lower ends of the valve body of this product are provided with external convex connection floor, and connection bolt holes are opened on the floor, which makes the valve body compact in structure and more convenient for manufacturing and installation. The rubber ring on the sealing surface of valve body is made of butadiene rubber ring or fluorine rubber ring, which is more wear-resistant. Stem and disc are made of stainless steel for greater corrosion resistance. This product has compact structure, good sealing effect, wear resistance, corrosion resistance, convenient and reliable use, especially suitable for Marine ships.