A schematic representation of a basic hydro-pneumatic circuit with FRL, DC valves and an end-effector (hydro-pneumatic cylinder). Here a 5/3 valve (DC valve) is used for the approach stroke and a 5/2 valve (DC valve) used for the power stroke.
A modification of the above circuit with an additional air-receiver for redundancy and additional safety elements.
A pneumatic circuit with a hydro-pneumatic cylinder and three pneumatic cylinders used for clamping a work-piece.
