Device and method for filling tanks with pressurized gas

A device for filling tanks with pressurized gas, the device comprising:

• at least one gas source;
• and
• a transfer circuit comprising:
• at least one upstream end connected to the at least one source;
• and
• a plurality of downstream ends, each end configured to be connected to a respective tank to be filled;
• a set of respective connecting valves;
• a portion of pipe(s) forming a loop and
• a plurality of buffer storage containers, each of the plurality of buffer storage containers are connected in parallel to the loop via respective one of the connecting valves of the set of respective connecting valves;
• wherein the set of respective connecting valves, portion of pipe(s) forming the loop, and the plurality of buffer storage containers are between the upstream end the plurality of downstream ends;
• wherein said plurality of downstream ends are connected in parallel to said loop and comprising a set of respective linking valves and
• wherein via control of the set of connecting valves and the set of respective linking valves, at least one first buffer storage container of the plurality of buffer storage containers is brought into fluidic communication, via the loop, with a first downstream end of the plurality of downstream ends and, simultaneously, at least one second buffer storage container of the plurality of buffer storage containers is brought into fluidic communication, via the loop, with a second downstream end of the plurality of downstream ends and/or two separate buffer storage containers of the plurality of buffer storage containers are brought into fluidic communication.