Valve (1) für eine Operationshilfe, miteiner Auflagefläche (2) undeinem einerseits von der Auflagefläche (2) abragenden Flügel (5, 6),einem Absaugrohr (3)wobei das Absaugrohr (3) andererseits der Auflagefläche (2) angeordnet ist.The valve (1) comprises a support surface (2), a wing (5,6) projecting from the support surface on the one hand and a suction tube (3) arranged on the other hand of the support surface. A suction hole is introduced into the support surface, such that it lies in the suction tube. The suction tube is welded to the support surface. The suction tube is made from a tube with a diameter of 6 millimeter, from which a part of 2 millimeter parallel to a longitudinal axis is removed. The support surface comprises a kink, which is angled downward and separates the wing.