The present invention relates to a dispensing device for a dispensing system to be used in connection with dispensing of a beverage. The dispensing system comprises a beverage container comprising a beverage outlet, and a pressure medium, such as CO2, which is adapted to force the beverage via the beverage outlet out of said beverage container. The dispensing device comprises a coupling member, and the connection of dispensing of beverage and the connection of the flow of said pressure medium to said beverage container (4) are effected by an essentially linear movement of said coupling member, and the disconnection of dispensing of beverage and the disconnection of the flow of said pressure medium to said beverage container is effected by an essentially linear movement of said coupling member. The present invention further relates to a method for dispensing beverage from a dispensing system comprising a dispensing device.