Patent ID: 7419367

Claim:
Pump for pumping one or more media, comprising: a housing having at least one pump chamber, which is provided with a port and which is delimited by a displacement member which is movable to and from between a first position and a second position, a movable actuator body, consisting of a magnetizable or magnetic material, for driving the displacement member, electromagnetic drive means for creating a magnetic field in order to move the actuator body, wherein the pump chamber, at the port, is provided with a magnetically operable valve comprising a magnetizable or magnetic material, which reacts directly to said magnetic field generated by the electromagnetic drive means, such that when the displacement member is driven from the first position to the second position, the magnetically operable valve at the port is driven by the magnetic field to a position in which the port is closed, and when the displacement member is driven from the second position to the first position, the magnetically operable valve at the inlet is driven by the magnetic field to a position in which the port is opened.