Hydraulic device

A hydraulic device comprising

• a housing;
• a first tubular cavity and a second tubular cavity provided within the housing;
• a reciprocatable arranged piston structure, the piston structure comprising a first piston and a second piston;
• wherein
• the first piston divides the first cavity into two chambers, and
• the second piston divides the second cavity into two chambers;
• fluid passages for individually exchanging fluid between an exterior of the housing and the chambers of the first and the second cavities, where each fluid passage comprising a controllable shut-off valve, so as to provide a reciprocating movement of the piston structure by exchanging fluid between exterior and the two chambers of the first cavity,
• the hydraulic device being configured to control the shut-off valves to selectively be in a closed state or in an open state
• and
• wherein the hydraulic transform further comprising pressure sensors, wherein said pressure sensors are configured to determining a pressure in the two chambers of the first cavity and the two chambers of the second cavity and wherein the determined pressures are used to control a state of the controllable shut-off valves.