Pumping and switching device defining a containment volume and comprising: - a predetermined number of inlet openings configured to allow an inlet of at least one fluid into said containment volume; - a predetermined number of outlet openings configured to allow an outflow of at least said fluid from said containment volume, said outlet openings being able to be selectively put in fluid communication with said inlet openings; - a selector device arranged at least partially within said containment volume, said selector device being rotatable in a single first predetermined rotation direction within said containment volume, said selector device putting in fluid communication at least one inlet opening and at least one outlet opening; and - a pump; characterized in that: the pump is mounted on said selector device inside said containment volume and integral with said selector device during the rotation in said first rotation direction, said pump comprising a rotor rotatable with respect to said selector device only in a second rotation direction opposite to said first rotation direction, the pump moving a fluid through said inlet opening and said outlet opening put in fluid communication by the selector device; and it further comprises sensor means associated with the selector device and/or the pump, said sensor means being adapted to measure: - an absolute angular position of the selector device within the containment volume; and/or - an absolute angular position of the pump within the containment volume; and/or - a relative angular position between the selector device and the pump. - a predetermined number of inlet openings configured to allow an inlet of at least one fluid into said containment volume; - a predetermined number of outlet openings configured to allow an outflow of at least said fluid from said containment volume, said outlet openings being able to be selectively put in fluid communication with said inlet openings; - a selector device arranged at least partially within said containment volume, said selector device being rotatable in a single first predetermined rotation direction within said containment volume, said selector device putting in fluid communication at least one inlet opening and at least one outlet opening; and - a pump; the pump is mounted on said selector device inside said containment volume and integral with said selector device during the rotation in said first rotation direction, said pump comprising a rotor rotatable with respect to said selector device only in a second rotation direction opposite to said first rotation direction, the pump moving a fluid through said inlet opening and said outlet opening put in fluid communication by the selector device; and it further comprises sensor means associated with the selector device and/or the pump, said sensor means being adapted to measure: - an absolute angular position of the selector device within the containment volume; and/or - an absolute angular position of the pump within the containment volume; and/or - a relative angular position between the selector device and the pump. - an absolute angular position of the selector device within the containment volume; and/or - an absolute angular position of the pump within the containment volume; and/or - a relative angular position between the selector device and the pump.