A needleless connector comprises a body comprising a fluid path, a vent path, and a male fitting. A valve is disposed within the male fitting and configured to move between a first configuration, in which the fluid path is blocked, and a second configuration, in which the fluid path is open. A seal is fixedly disposed around the valve and configured to slide along an inner surface of the male fitting and to separate the fluid path from the vent path in the first configuration and in the second configuration.
