Filling head for a machine for filling containers, notably bottles or the like, with a liquid, notably with still wine, sparkling wine or the like, from a tank or a similar storage container forming part of said machine, said device comprising: - a hollow body forming an intermediate reservoir or conveyance duct, fluidically connected to said tank and being extended in the bottom part by a first tube defining an axial direction and configured to be able to be introduced into a container to be filled through an aperture thereof, for example at a neck (3"), - a second tube extending coaxially and internally through the hollow body and the first tube and defining, with the first tube, a nose with a passage with annular section allowing a fluidic connection between said hollow body and a container to be filled, this passage being able to be selectively opened and closed tightly by axial displacement of the second tube with respect to the first tube, - a tight bearing means configured to tightly block the aperture of the container around the nose passing through said aperture and determining, in cooperation with said first and second tubes (7, 8), the level of filling of said container, - an actuation means for controlling the axial positioning of the internal second tube, said means being situated above the hollow body, opposite the nose, - a set of control valves (12 to 16) fluidically connected respectively with the hollow body, the second tube or the container to be filled to inject therein at least one type of gas or air or to evacuate therefrom the air, an injected gas or an excess of liquid, the device further comprising a fluidic management block combining valves (12 to 15) fluidically linked to the internal second tube and comprising at least one outlet valve (12; 14) to apply a negative pressure or set atmospheric pressure in the container to be filled, at least one neutral or inerting gas injection valve, and at least one valve for establishing fluidic connection with the hollow body, this functional block being mounted in the top part of said hollow body, passed through by the second tube and supporting the actuation means thereof, and in that said hollow body with the first and second tubes (7, 8), the functional fluidic management block and the actuation means of the second tube together form a structural unit fixed rigidly on or in the tank. - a hollow body forming an intermediate reservoir or conveyance duct, fluidically connected to said tank and being extended in the bottom part by a first tube defining an axial direction and configured to be able to be introduced into a container to be filled through an aperture thereof, for example at a neck (3"), - a second tube extending coaxially and internally through the hollow body and the first tube and defining, with the first tube, a nose with a passage with annular section allowing a fluidic connection between said hollow body and a container to be filled, this passage being able to be selectively opened and closed tightly by axial displacement of the second tube with respect to the first tube, - a tight bearing means configured to tightly block the aperture of the container around the nose passing through said aperture and determining, in cooperation with said first and second tubes (7, 8), the level of filling of said container, - an actuation means for controlling the axial positioning of the internal second tube, said means being situated above the hollow body, opposite the nose, - a set of control valves (12 to 16) fluidically connected respectively with the hollow body, the second tube or the container to be filled to inject therein at least one type of gas or air or to evacuate therefrom the air, an injected gas or an excess of liquid, the device further comprising a fluidic management block combining valves (12 to 15) fluidically linked to the internal second tube and comprising at least one outlet valve (12; 14) to apply a negative pressure or set atmospheric pressure in the container to be filled, at least one neutral or inerting gas injection valve, and at least one valve for establishing fluidic connection with the hollow body, this functional block being mounted in the top part of said hollow body, passed through by the second tube and supporting the actuation means thereof, and in that said hollow body with the first and second tubes (7, 8), the functional fluidic management block and the actuation means of the second tube together form a structural unit fixed rigidly on or in the tank.