Abstract: The tank comprises a cylindrical vessel, air tight sealing means, pressure control means, and in addition: a first gas adduction nozzle, located in proximity of the bottom of the cylindrical vessel; a second gas adduction nozzle, provided at an intermediate height of the cylindrical vessel; a third gas adduction nozzle, provided in the upper part of the cylindrical vessel, above the maximum level reached by the liquid; power and control means, functionally connected to the pressure control means, first, second and third gas adduction nozzles, adapted to determine for the same respective predetermined operative phases, in order to perform vinification processes with controlled oxidation, even without the addition of sulphites. The tank is advantageously equipped with organs for taking the must from the bottom and spreading it from the top, by up-down shaking, activated by the power and control means.

Abstract: The tank (1) comprises a cylindrical vessel (2), air tight sealing means (4), associated at the top of this, pressure control means (6), and in addition: first gas adduction nozzles (71), located in proximity of the bottom (22) of said cylindrical vessel (2); seconds gas adduction nozzles (72), provided at an intermediate height of said cylindrical vessel (2); third gas adduction nozzles (73), provided in the upper part of said cylindrical vessel (2), above the maximum level reached by the liquid; power and control means (8), functionally connected to said pressure control means (6), first, second and third gas adduction nozzles (71, 72, 73), adapted to determine for the same respective predetermined operative phases, in order to perform vinification processes with controlled oxidation, even without the addition of sulphites.