A solution for the known difficulties is given with this invention. Therefore a rotating valve is described. This valve controls the fluid flow in the system without getting in touch with the fluid itself. To do so, the valve heads are pressed on the flexible fluid pipes, which causes the flow through this point to stop. The valve heads are moved by electrically con-trolled actuators which perform a rotation movement. Unlike with membrane valves, additional energy to keep the valve open or closed is not required. Furthermore it is possible to use miniature servo actuators for the movement of the valve heads.
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