A pasteurization tunnel and a method for pasteurizing beverage packs are described, wherein the beverage packs are conveyed on at least two decks lying one upon the other and sprayed with a heated spraying liquid from spraying pipes extending each transversely to the conveying direction of the beverage packs. According to the invention, the spraying liquid is guided through the spraying pipes of the one deck into the spraying pipes of the other deck. Thereby, the maintenance efforts for removing deposits in sections of the spraying pipes where the flow is weak can be reduced.
