Abstract: The invention relates to an expansion valve block which is equipped with coordinated means (8) for isolating the high-pressure circuit (3) and the low-pressure circuit (4) such that, when the gas delivery inlet is opened and closed, the two circuits are automatically controlled using the sequence that best guarantees the immunity of the installation.

Abstract: The invention relates to an expansion valve block which is equipped with coordinated means (8) for isolating the high-pressure circuit (3) and the low-pressure circuit (4) such that, when the gas delivery inlet is opened and closed, the two circuits are automatically controlled using the sequence that best guarantees the immunity of the installation.

Abstract: An apparatus for storing and mixing two pressurized gases. The apparatus has an outer container for storing the first gas and an inner container, situated inside the outer container, for storing the second gas. The gases exit their containers through outlet passages, are mixed together resulting in a mixture which leaves the apparatus through and output channel.

Abstract: The invention concerns a device for storing and mixing two gases under pressure comprising: an outer chamber (15) containing a first gas; an inner chamber (17) arranged inside the outer chamber containing the second gas; a two-way faucet (19) including: a body fixed in the opening of the outer chamber; a first passage (20?) connected to the opening of the inner chamber (18); a second passage (20) emerging in the outer chamber (15); two outlet channels (21, 21?) connected each to one end of each passage (20, 20?) of the faucet (19), including: first and second pressure adjusting means (6, 6?); at least a controllable flow rate selecting barrel (7, 7?) connected to one of the pressure adjusting means (6, 6?), the barrel (7, 7?) enabling to select orifices of different dimensions (9, 9?) for the outlet channel (21, 21?) provided with the barrel; a mixing chamber (10) wherein emerge the outlet channels (21, 21?).