INTEGRATED PUMP VALVE UNIT

Integrated pump valve unit 1 comprising a piezoelectrically actuated air pump portion 10, comprising at least one pump air chamber 12, 14 and at least one pump piezoelectric element 16 for actuating the air pump portion 10; a piezoelectrically actuated air valve portion 30, comprising a valve air chamber 32 and at least one valve piezoelectric element 36 for controlling the opening and closing of an air flow through the valve portion 30, wherein the valve portion 30 is in fluid connection with the pump portion 10; and wherein the pump portion 10 and the valve portion 30 forming a structural unit.