A filler for introducing a liquid into a container comprising a rotating carousel in turn comprising a plurality of filling stations in turn comprising a first filling station; the first filling station in turn comprising: - a liquid dispensing line comprising a first liquid dispensing nozzle for dispensing liquid into a container; - a dummy bottle for receiving a sanitising fluid which can be dispensed by the first nozzle and used for the sanitisation of at least a part of the liquid dispensing line; - lowering/raising means for lowering/raising the dummy bottle; - movement means for moving the dummy bottle around a vertical rotation axis to move the dummy bottle between a first configuration in which the dummy bottle is not located vertically below the first nozzle and a second configuration in which the dummy bottle is located vertically below the first nozzle; characterized in that the movement means for moving the dummy bottle comprise: - a first cam movable between an operating position and a resting position; - a second cam movable between an operating location and a resting location; - first interception means for intercepting the first cam; said first interception means being solidly constrained to the dummy bottle and movable between a first and a second position, in said first position being intended to intercept the first cam in the operating position; - second interception means for intercepting the second cam solidly constrained to the dummy bottle and movable between a first and a second location; the first location being assumed when the first interception means are located in the second position and the second location being assumed when the first interception means are located in the first position; the second interception means in the second location being intended to intercept the second cam in the operating location. - a liquid dispensing line comprising a first liquid dispensing nozzle for dispensing liquid into a container; - a dummy bottle for receiving a sanitising fluid which can be dispensed by the first nozzle and used for the sanitisation of at least a part of the liquid dispensing line; - lowering/raising means for lowering/raising the dummy bottle; - movement means for moving the dummy bottle around a vertical rotation axis to move the dummy bottle between a first configuration in which the dummy bottle is not located vertically below the first nozzle and a second configuration in which the dummy bottle is located vertically below the first nozzle; - a first cam movable between an operating position and a resting position; - a second cam movable between an operating location and a resting location; - first interception means for intercepting the first cam; said first interception means being solidly constrained to the dummy bottle and movable between a first and a second position, in said first position being intended to intercept the first cam in the operating position; - second interception means for intercepting the second cam solidly constrained to the dummy bottle and movable between a first and a second location; the first location being assumed when the first interception means are located in the second position and the second location being assumed when the first interception means are located in the first position; the second interception means in the second location being intended to intercept the second cam in the operating location.