The invention relates to an element for controlling filling and/or drawing of a pressurized gas, to be mounted in an opening of a tank (1), comprising a body (21) provided with at least one device (8) for controlling the circulation of gas placed between a first end, which has an opening (31) forming an inlet and/or an outlet for the gas with regard to the tank, and a second end for communicating with the inside of the tank. The control element also comprises a safety gas escape device (5) for evacuating the gas from the reservoir in the event of a dangerous situation and comprises a channel or gas escape circuit (215, 213, 212, 211, 31) running between a first end (215) for communicating with the pressurized gas of the tank and a second end (31) for communicating with a user circuit or with the atmosphere, the escape circuit being closed or not according to the state of a safety element (52), characterized in that the second end of the gas escape circuit (215, 213, 212, 211, 31) coincides with the opening (31) of the control element forming an inlet and/or an outlet for the gas.