Patent ID: 8869845

Claim:
A pressurized gas dispensing, comprising a first end intended to be placed in the orifice of a pressurized-gas storage reservoir, and a second end comprising a connection interface that can be connected selectively to a device adapted to control the filling and/or the withdrawing of gas from the reservoir, the dispensing device comprising an internal gas circuit having an upstream end intended to communicate with the inside of the reservoir and a downstream end intended to be connected to the said filling and/or withdrawing control device, the internal circuit comprising, in series, from the upstream end downstream, a pressure regulator and a downstream isolation valve, a portion of the internal circuit that lies between the pressure regulator and the downstream isolation valve defining a low-pressure chamber, wherein the connection interface comprises at least one safety lock that can be moved selectively between a first rest position in which it configures the connection interface in a first configuration in which the device is connectable to the said mating filling and/or withdrawing control device and an active second position in which it configures the connection interface in a second configuration that prevents connection of the device to a mating filling and/or withdrawing control device, the safety lock being subjected to the pressure in the low-pressure chamber directly and/or via a moving piston, the safety lock being moved into its active position under the action of the pressure in the low-pressure chamber when the pressure in the low-pressure chamber is above a set threshold.