Device for delivering and dosing powdery, liquid, pasty or creamy products comprising: - a first duct for entering the product to be dosed; - a second duct for exiting the dosed product; - a internal recess connected to the first duct for entering the product to be dosed; - at least one first pumping element (7, 7a) for dosing such product, fluid connected to the internal recess and to the second duct for exiting the dosed product; - a first shaft (11, 11a) connected to the first pumping element (7, 7a); - first motor means (6, 6a) connected to the first shaft (11, 11a) through a first linear actuator (4, 4a) adapted to transform the rotary motion of the first motor means (6, 6a) into a linear movement of the first shaft (11, 11a) which is performed until the first shaft (11, 11a) reaches an abutment obtained in the outlet duct, the movement of the first shaft (11, 11a) being adapted to follow the rotary motion of the first motor means (6, 6a) after the first shaft (11, 11a) has reached the abutment, to actuate the first pumping element and deliver the product from the second duct; and further comprising: - a second pumping element fluid connected to the internal recess and to the second duct of the dosed product; - a second shaft connected to the second pumping element; - second motor means connected to the second shaft through a second linear actuator adapted to transform the rotary motion of the second motor means into a linear movement of the second shaft which is performed until the second shaft reaches an abutment obtained in the second duct, the movement of the second shaft being adapted to follow the rotary motion of the second motor means after the second shaft has reached the abutment, to actuate the second pumping element dosing the delivery of the product from the second duct; wherein the second pumping element has a flow-rate greater than that of the first pumping element, in order to allow an adjustment of the flow-rate by activating both or only one of the two pumping elements (7, 7a), the first and second linear actuators (4, 4a) are composed of a worm screw, preferably with a reversible pitch, with related scroll connected through the corresponding shaft (11, 11a) to the corresponding motor means (6, 6a), the first and second pumping elements (7, 7a) are volumetric pumps and comprise a pumping chamber (14, 14a) inside which a rotor (15, 15a) is assembled connected to the corresponding shaft (11, 11a) and to a corresponding shutter (16, 16a) adapted to close a corresponding outlet nozzle (8, 8a) of the product which communicates the internal recess with the second duct, and the second pumping element has a pumping chamber whose volume is greater than that of the pumping chamber of the first pumping element, in order to allow an adjustment of the flow-rate by opening only one of the two outlet nozzles (8, 8a) or by opening them both simultaneously, thereby dosing with more accuracy a delivery of the product from the second duct. - a first duct for entering the product to be dosed; - a second duct for exiting the dosed product; - a internal recess connected to the first duct for entering the product to be dosed; - at least one first pumping element (7, 7a) for dosing such product, fluid connected to the internal recess and to the second duct for exiting the dosed product; - a first shaft (11, 11a) connected to the first pumping element (7, 7a); - first motor means (6, 6a) connected to the first shaft (11, 11a) through a first linear actuator (4, 4a) adapted to transform the rotary motion of the first motor means (6, 6a) into a linear movement of the first shaft (11, 11a) which is performed until the first shaft (11, 11a) reaches an abutment obtained in the outlet duct, the movement of the first shaft (11, 11a) being adapted to follow the rotary motion of the first motor means (6, 6a) after the first shaft (11, 11a) has reached the abutment, to actuate the first pumping element and deliver the product from the second duct; - a second pumping element fluid connected to the internal recess and to the second duct of the dosed product; - a second shaft connected to the second pumping element; - second motor means connected to the second shaft through a second linear actuator adapted to transform the rotary motion of the second motor means into a linear movement of the second shaft which is performed until the second shaft reaches an abutment obtained in the second duct, the movement of the second shaft being adapted to follow the rotary motion of the second motor means after the second shaft has reached the abutment, to actuate the second pumping element dosing the delivery of the product from the second duct;