Needlefree valve device (1) for controlling the flow of fluid in a pathway, the device (1) being operable in a closed and in an open configuration and comprising a first component (3), a second component (9), a locking means configured to selectively engage the first component (3) with the second component (9) in the open configuration when the first component (3) is displaced in an opening direction (23) along a valve axis toward the second component (9) or in the closed configuration when the first component (3) is displaced against the opening direction (23) away from the second component (9), and a sealing component (15) having a first resilient portion (19) and a second resilient portion (16), the first resilient portion (19) comprising at least one slit (26) and contacting the first component (9) to provide a seal in the closed configuration, wherein the first resilient portion (19) is adapted to move, buckle or flex to enable fluid flow through the at least one slit (26) upon application of a mechanical force of the first component (3) on the first resilient portion (19) in the opening direction (23) to assume the open configuration, and wherein the second resilient portion (16) is adapted to apply a counterforce to return the valve device (1) to the closed configuration when the mechanical force is no longer applied.Linvention concerne un dispositif de valve sans aiguille (1) destiné à réguler lécoulement dun fluide dans une voie de passage, le dispositif (1) pouvant fonctionner dans une configuration fermée et dans une configuration ouverte et comprenant un premier composant (3), un second composant (9), un moyen de verrouillage conçu pour coupler sélectivement le premier composant (3) au second composant (9) dans la configuration ouverte lorsque le premier composant (3) est déplacé dans une direction douverture (23) le long dun axe de la valve vers le second composant (9) ou dans la configuration fermée lorsque le premier composant (3) est éloigné à loppos
