An equipment for making CO 2 snow, ready to be injected in an installation using such a snow, notably an installation of the food industry, equipment comprising the following elements: a) a device for expanding liquid carbon dioxide, for example a Calibrated orifice, able to receive the liquid carbon dioxide and to transform a part of the liquid flow into gas and a part into solid, said device being installed at the inlet of the equipment, b) a J-Tube, said expansion device being installed at the inlet of the J-tube, the J-Tube being able to separate the diphasic gas-solid mixture produced by said expansion device into two phases, a solid phase heavier than the gaseous phase, tending to go outwards of the tube, and a gas phase tending to go on the inwards part of the J-Tube, characterized by c) a transition plate, wherein the end of the J-Tube fits into the plate, the plate being in its downstream side in gas connexion with two pipes, a main pipe and a secondary pipe, the main pipe being able to carry the solid snow phase, and the second pipe being able to carry the gaseous phase; d) a Snow Horn, wherein said main pipe is connected tangentially to the top of the Snow Horn; and e) a Venturi System, wherein said secondary pipe is connected to the Venturi System which is installed on the top of the snow horn, in order that the high speed of the fluid, harnessed inside the Venturi System, generates a reduction in pressure inside the Horn, making it possible the sucking up of the gaseous phase formed by sublimation of the solid phase running inside the Horn, and wherein the part of gas exiting the J-tube, used to create the depression, and the part of gas intercepted by the Venturi system are conveyed outside of the equipment. a) a device for expanding liquid carbon dioxide, for example a Calibrated orifice, able to receive the liquid carbon dioxide and to transform a part of the liquid flow into gas and a part into solid, said device being installed at the inlet of the equipment, b) a J-Tube, said expansion device being installed at the inlet of the J-tube, the J-Tube being able to separate the diphasic gas-solid mixture produced by said expansion device into two phases, a solid phase heavier than the gaseous phase, tending to go outwards of the tube, and a gas phase tending to go on the inwards part of the J-Tube, characterized by c) a transition plate, wherein the end of the J-Tube fits into the plate, the plate being in its downstream side in gas connexion with two pipes, a main pipe and a secondary pipe, the main pipe being able to carry the solid snow phase, and the second pipe being able to carry the gaseous phase; d) a Snow Horn, wherein said main pipe is connected tangentially to the top of the Snow Horn; and e) a Venturi System, wherein said secondary pipe is connected to the Venturi System which is installed on the top of the snow horn, in order that the high speed of the fluid, harnessed inside the Venturi System, generates a reduction in pressure inside the Horn, making it possible the sucking up of the gaseous phase formed by sublimation of the solid phase running inside the Horn, and wherein the part of gas exiting the J-tube, used to create the depression, and the part of gas intercepted by the Venturi system are conveyed outside of the equipment.