There are totally 14 kinds of specifications, it can be applied to water conservancy and hydropower project. The intake gate’s rapid opening-closing of water turbinegenerator inlet and surge tank downstream can use this cylinder. According to the requirements of the maximum opening of the building and gate, different installation methods can be designed. The advantage of the product is: compact main structure; stable and reliable operating; advanced technology; and it’s convenient for remote control and centralized control, which is good for optimizing the general layout of water conservancy buildings.