The apparatus for preparing carbonated refrigerated beverages comprises at least one containment tank (2) suitable to contain the product to be dispensed and closed by a pressure tightening lid (4) means for feeding the product to be dispensed inside said containment tank (2) and means for feeding a pressurization gas inside said containment tank (2) to maintain the same tank (2) under pressure. The feed means of the pressurization gas comprise single feed and discharge ducts (21, 22) for the pressurization gas, separately connected to said tank (2) and provided with respective valve members (23, 24) for controlling the flow of the same pressurization gas.
