An apparatus is presented comprising a first part comprising a sealing structure, a membrane being attached to said first part and a second part being attached to said membrane, wherein said second part comprises a valve area with a first opening and a second opening, wherein said valve area is located in the area of said sealing structure, wherein said valve area is configured to allow for a fluidic communication between said first opening and said second opening and wherein said sealing structure is configured to allow for an interruption of said fluidic communication between said first opening and said second opening.
