Product Description Phone no./Whatsapp: 0086 15145386673 emarks: Specification ,kind of drive, connection method and working stroke,;If have special requirements should be specified. Actuator is a driving tool supporting the use of top drive system, and it consists of actuator and crank. It drives the actuator by the top drive hydraulic system, and the actuator controls open and close of the inner ball valve in Upper IBOPs by rotating of crank mechanism. It is reliable to work and easy to handle.