The present disclosure relates to a connector device (1) for a negative pressure wound therapy system. The connector device (1) comprises a connector housing (2), a fluid outlet (3) connected to the connector housing (2), an air feeding port (4) and an air filter (5) and coupling means (6). The fluid outlet (3) is adapted to be connected to a negative pressure source (23). The connector device (1) is adapted to be engaged with a wound side connector (25) of a wound side assembly (19) by means of the coupling means (6). The wound side assembly (19) comprises a fluid removing conduit (21) and an air supplying conduit (22), wherein a portion of each one of the fluid removing conduit (21) and the air supplying conduit (22) is connected to the wound side connector (25). The connector device (1) is such that when the connector device (1) is engaged with the wound side connector (25), the fluid removing conduit (21) is fluidly connected to the fluid outlet (3) and the air supplying conduit (22) is fluidly connected to the air feeding port (4) such that air ambient of the connector device (1) can be fed to the air supplying conduit (22) via the air feeding port (4) and the air filter (5).