Assembly for controlling and dispensing gas for a container of pressurized gas

A gas controlling and dispensing assembly for connection to a container containing said gas under pressure, the assembly comprising:

• a main body having a longitudinal axis, and serially arranged, a gas inlet passage formed in the main body, opening into the container and containing an isolation valve exposed to the gas under pressure in the container;
• at least one pressure reducer;
• and flow selecting means for selecting and regulating the flow rate of gas from the container and exiting at reduced pressure through at least one gas outlet;
• a tubular control member for controlling actuation of the isolation valve, said tubular control member surrounding at least part of the main body and being coaxial therewith;
• said isolation valve comprising a spool arranged to move transversely in a transversal recess formed in the main body and having at least one end projecting out of the main body and adapted to cooperate in engagement with a curved ramp means formed in the tubular control member and shaped in such a way that rotation of the tubular member around said longitudinal axis causes a translational movement of the spool transversely to said axis.