Abstract: The invention relates to a head (2) for a tank (1) used to store pressurised gas, comprising, in an integrated manner: at least two components (131, 132) for treating, distributing and/or shutting off the gas; an upstream connector (20) suitable for being removably attached in a boss (4) of the tank (1); and downstream outlet pipes (211, 212) suitable for connecting the head (2) to any system using said gas by means of the aforementioned components (131, 132). According to the invention, each component (131, 132) comprises at least two sealing devices (141, 142) defining an intermediate space therebetween, and at least one pipe (12), called tapping pipe, connects each of the intermediate spaces and a common space (8) into which ail the tapping pipes (12) emerge, with an orifice (15) providing a connection between the common space (8) and a gas-detection device (16).

Abstract: Method for leak testing a tank head, intended to be filled with a gas under high pressure and before it enters service, which head including at least two sealing devices, referred to as an inner and an outer sealing devices, which delimit there between an intermediate space into which opens a duct which communicates with the outside, such that: said test is carried out during the manufacture of the tank assembly, after fitting the tank head and before this tank is filled with high-pressure gas, pressurized gas is injected via the duct into the intermediate space between the two sealing devices, the gas injection is stopped at a given pressure, the value of said pressure is measured via said duct.

Abstract: A compensated pressure regulator for fluid under pressure including a hollow body, at least one intake for a fluid at high pressure, at least one outlet for this fluid at low pressure, a mobile regulation piece which slides in a cylindrical bore, able to stop the intake of the fluid at high pressure, and such that it includes a piece of generally cylindrical form with two heads of which the two partial inner and opposing faces are of quasi-equal surface; these two partial inner faces, a part of a bore surrounding the piece in a seal-tight manner and a seal integral with this bore delimits a high-pressure chamber, and the piece with two heads and this bore being mobile in relation to one another, and the intake for the high-pressure fluid emerges laterally in this high-pressure chamber, which fluid transmits to the mobile regulation piece loads which are cancelled out.

Abstract: A compensated pressure regulator for fluid under pressure including a hollow body, at least one intake for a fluid at high pressure, at least one outlet for this fluid at low pressure, a mobile regulation piece which slides in a cylindrical bore, able to stop the intake of the fluid at high pressure, and such that it includes a piece of generally cylindrical form with two heads of which the two partial inner and opposing faces are of quasi-equal surface; these two partial inner faces, a part of a bore surrounding the piece in a seal-tight manner and a seal integral with this bore delimits a high-pressure chamber, and the piece with two heads and this bore being mobile in relation to one another, and the intake for the high-pressure fluid emerges laterally in this high-pressure chamber, which fluid transmits to the mobile regulation piece loads which are cancelled out.

Abstract: A pneumatic component for the controlled micro-diffusion of gas, intended to be fastened to a pressurized gas reservoir having an aerosol valve. The pneumatic component includes a hollow body whose inner portion has at least one upper chamber enclosed by a leaktight, moving shutter, and a fastening system designed to cooperate in a leaktight manner with the upper part of the container. At least one lower chamber of the pneumatic component is formed, once the component has been fastened to the container, between the shutter and the upper part of the container. The shutter bears against the valve, and a lateral orifice in communication with the lower chamber is designed to expel gases from the container to the outside of the pneumatic component.

Abstract: A pneumatic component for the controlled micro-diffusion of gas, intended to be fastened to a pressurized gas reservoir having an aerosol valve. The pneumatic component includes a hollow body whose inner portion has at least one upper chamber enclosed by a leaktight, moving shutter, and a fastening system designed to cooperate in a leaktight manner with the upper part of the container. At least one lower chamber of the pneumatic component is formed, once the component has been fastened to the container, between the shutter and the upper part of the container. The shutter bears against the valve, and a lateral orifice in communication with the lower chamber is designed to expel gases from the container to the outside of the pneumatic component.