Powerful and modern hydraulic tool designed for the maneuver of water valves of aqueducts, the use eliminates tiring and long manual operations.The long handle and the clockwise/anticlockwise activation control guarantee an excellent control of the operations in all conditions, it can be used by one or two operators and operated by both hydraulic power packs and by the circuits of vans and mini excavators, its use guarantees safety and a great saving of time. Hydraulic operation means no noise, low vibration, robustness, long operating life, minimal maintenance requirements, implied impossibility of electric shock injuries. It can also be used for the mechanical rotation of other rotating devices such as machines for pipes and handling, gates of irrigation channels, various crank mechanisms. VO31 increases productivity and simplifies operations, it can not be missing in the equipment of modernly equipped teams.