NOVELTY - The self-regulating process comprises immersing a reservoir (3) in a liquid (L) for reacting with a solid (S) to produce a gas (G), where the reservoir contains a load (6) of the solid, penetrating the liquid in a free-buffer volume of the load through an opening (9) of the reservoir and leveling the liquid in an internal volume of the reservoir with discharge of the gas initially present in the reservoir by an orifice (8) of the reservoir, and generating gas by reaction of the solid by contacting the liquid and the evacuation of the gas through the orifice of the reservoir.    USE - The self-regulating process is useful for producing gas such as hydrogen gas, which is useful as a fuel source in fuel cells, burners and combustion turbines (claimed).    ADVANTAGE - The self-regulating process ensures efficient, simple and economical production of gas with increased quality at high flow rate.    DETAILED DESCRIPTION - The self-regulating process comprises immersing a reservoir (3) in a liquid (L) for reacting with a solid (S) to produce a gas (G), where the reservoir contains a load (6) of the solid, penetrating the liquid in a free-buffer volume of the load through an opening (9) of the reservoir and leveling the liquid in an internal volume of the reservoir with discharge of the gas initially present in the reservoir by an orifice (8) of the reservoir, generating gas by reaction of the solid by contacting the liquid and the evacuation of the gas through the orifice of the reservoir, adjusting a pressure of the gas produced by an immersion depth of the reservoir in the liquid, delivering the gas from the reservoir through the orifice in depth or to the surface of the immersing liquid, and steering volume flow gas discharged by controlled variation of the section of the orifice. The load is placed on an upper part of the internal volume of the reservoir above the free-buffer volume of any load. The opening of the reservoir is placed in a lower part of the reservoir and is adapted for penetration of the liquid in the free buffer volume. The orifice of the reservoir is placed in an upper part of the reservoir and is adapted for the gas evacuation. The level of the liquid in the reservoir moves itself according to a difference between the volume flow of generated gas and the volume flow of evacuated gas through the orifice. The solid load comprises a monolithic block with optionally an opening channel, pellets arranged in bulk form, foam, or powder. The liquid and the solid are adapted for generating hydrogen. The liquid consists of fresh water, sea water or hydrogen peroxide. An INDEPENDENT CLAIM is included for a self-regulating device for producing gas.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a device for production of gas.    Reservoir (3)    Load (6)    Orifice (8)    Opening (9)    Gas (G)    Liquid (L)    Solid. (S)