A connector for selectively dispensing fluid from a fluid container via a dispensing probe, the connector comprising: an outer cap supported by a container opening, the outer cap having a first passage, the first passage having a longitudinal axis, a first end, and a second end, the first and second ends (84, 86) being separated by a length along the longitudinal axis, an interior surface; a plug being slidingly movable in the first passage between an open position and a closed position, the plug having a first surface and a second surface; and a plurality of crown elements positioned at the first surface of the plug, the crown elements being extendable such that the crown elements flare radially outwardly from the longitudinal axis of the first passage to lock the plug proximal to the first end of the first passage in the closed position, and the crown elements being retractable into a retracted position such that the crown elements retract radially inwardly toward the longitudinal axis of the first passage allowing the plug to slide into the first passage and to unlock the plug into the open position, the plug being slidable from the first end of the first passage and into the first passage when the crown elements are in the retracted position, the plug preventing a flow of fluid from the container to the dispensing probe when locked in the closed position, and the plug allowing the flow of fluid from the container to the dispensing probe when unlocked into the open position, the connector further comprising a first flap, wherein the first flap is: - positioned on the plug, the first flap forming a frictional fit with the first passage when locked in the closed position; and/or - adapted to abut against the interior surface of the first passage to block the fluid from the container to the dispensing probe from flowing past the first flap in the closed position and does not abut against the interior surface of the first passage when the plug is unlocked, the position of the first flap when the plug is unlocked creating a second passage for the fluid from the container toward the dispensing probe, characterized in that the connector further comprises a plurality of guidance rings positioned on the plug and spaced apart from each other along the longitudinal axis of the first passage, at least one guidance ring of the plurality of guidance rings adapted to align the first flap along a radial direction, preferably the guidance ring is further adapted to align the first flap along the longitudinal axis of the first passage. an outer cap supported by a container opening, the outer cap having a first passage, the first passage having a longitudinal axis, a first end, and a second end, the first and second ends (84, 86) being separated by a length along the longitudinal axis, an interior surface; a plug being slidingly movable in the first passage between an open position and a closed position, the plug having a first surface and a second surface; and a plurality of crown elements positioned at the first surface of the plug, the crown elements being extendable such that the crown elements flare radially outwardly from the longitudinal axis of the first passage to lock the plug proximal to the first end of the first passage in the closed position, and the crown elements being retractable into a retracted position such that the crown elements retract radially inwardly toward the longitudinal axis of the first passage allowing the plug to slide into the first passage and to unlock the plug into the open position, the plug being slidable from the first end of the first passage and into the first passage when the crown elements are in the retracted position, the plug preventing a flow of fluid from the container to the dispensing probe when locked in the closed position, and the plug allowing the flow of fluid from the container to the dispensing probe when unlocked into the open position, the connector further comprising a first flap, wherein the first flap is: - positioned on the plug, the first flap forming a frictional fit with the first passage when locked in the closed position; and/or - adapted to abut against the interior surface of the first passage to block the fluid from the container to the dispensing probe from flowing past the first flap in the closed position and does not abut against the interior surface of the first passage when the plug is unlocked, the position of the first flap when the plug is unlocked creating a second passage for the fluid from the container toward the dispensing probe, - positioned on the plug, the first flap forming a frictional fit with the first passage when locked in the closed position; and/or - adapted to abut against the interior surface of the first passage to block the fluid from the container to the dispensing probe from flowing past the first flap in the closed position and does not abut against the interior surface of the first passage when the plug is unlocked, the position of the first flap when the plug is unlocked creating a second passage for the fluid from the container toward the dispensing probe, characterized in that the connector further comprises a plurality of guidance rings positioned on the plug and spaced apart from each other along the longitudinal axis of the first passage, at least one guidance ring of the plurality of guidance rings adapted to align the first flap along a radial direction, preferably the guidance ring is further adapted to align the first flap along the longitudinal axis of the first passage.