The present invention provides a wound dressing tubing connector, comprising a first unit and a second unit which are releasably connectable and which when connected form a fluid path through the connector, wherein the first unit comprises an inlet and an outlet and wherein the second unit comprises an inlet and an outlet, in which the outlet of the first unit and the inlet of the second unit when connected together define the fluid path, and wherein the first unit and the second unit are connectable to form an air and fluid tight seal and wherein the first unit and/or the second unit comprises a pressure regulator valve in fluid communication with the fluid path. Also provided are systems, kits and methods of treatment.