A filling device for selectively contact or contactless filling an article with a pourable product, comprising: - a common body, which defines a fluidic line defining a cavity connected at one side to a tank containing said pourable product, and through which said pourable product flows to an opening defined at an opposite side of said cavity, said common body comprising a shutter movable along an axis inside said cavity between an open configuration in which it prevents said pourable product from flowing along said fluidic line and a closed configuration in which it allows said pourable product to flow along said fluidic line; - an end portion (19a, 19b), which defines a filling mouth; said end portion (19a, 19b) being selectively fittable to said common body depending of contact or contactless filling to be carried out; said filling mouth being fluidly connected with said fluidic line, when said specific end portion (19a, 19b) is fitted to said common body; said filling device further comprising a connecting element which can be selectively arranged, in use,: - either in a first configuration, in which it blocks said specific end portion (19a, 19b) and said common body with respect to one another; or - in a second configuration, in which it leaves free from one another said end portion (19a, 19b) from said common body, characterized in that said shutter also defines a duct which is connected on one side to a tank and defines at the opposite side an opening for air exhausted during filling, and in that said opening is surrounded by said fluidic line and said opening of said cavity, and in that said shutter comprises a plurality of radially protruding blades which extend inside said fluidic line and are configured to impart a swirl motion to said pourable product upstream of said mouth, proceeding according the advancing direction of said pourable product towards said mouth, and in that the end portion for contactless filling comprises a nozzle configured to cancel the swirl movement of the flow of said pourable product and to direct said flow towards the centreline of that flow. - a common body, which defines a fluidic line defining a cavity connected at one side to a tank containing said pourable product, and through which said pourable product flows to an opening defined at an opposite side of said cavity, said common body comprising a shutter movable along an axis inside said cavity between an open configuration in which it prevents said pourable product from flowing along said fluidic line and a closed configuration in which it allows said pourable product to flow along said fluidic line; - an end portion (19a, 19b), which defines a filling mouth; - either in a first configuration, in which it blocks said specific end portion (19a, 19b) and said common body with respect to one another; or - in a second configuration, in which it leaves free from one another said end portion (19a, 19b) from said common body, characterized in that said shutter also defines a duct which is connected on one side to a tank and defines at the opposite side an opening for air exhausted during filling, and in that said opening is surrounded by said fluidic line and said opening of said cavity, and in that said shutter comprises a plurality of radially protruding blades which extend inside said fluidic line and are configured to impart a swirl motion to said pourable product upstream of said mouth, proceeding according the advancing direction of said pourable product towards said mouth, and in that the end portion for contactless filling comprises a nozzle configured to cancel the swirl movement of the flow of said pourable product and to direct said flow towards the centreline of that flow.