Patent ID: 6851575

Claim:
An assembly comprising a package and at least one outlet wherein, in use, an inner space of the package is filled with a fluid to be dispensed, wherein in the inner space of the package there prevails a pressure for enabling dispensing the fluid via the outlet, the assembly further comprising a pressure control device connected to the outlet adjacent the outlet, for feeding the fluid to the outlet via the pressure control device at a predetermined constant pressure which is independent of, and less than, the pressure prevailing in the inner space of the package, the pressure control device comprising a housing provided with an inflow opening, an outflow opening and a fluid flow path extending in the housing between the inflow opening and the outflow opening, the inflow opening being in fluid connection with the inner space of the package and the outflow opening being in fluid connection with the outlet, and the pressure control device further comprising a controllable seal for releasing and closing the fluid flow path and a pressure sensor element accommodated in the housing for movement between a first and a second position, the pressure sensor element in the first position controlling the controllable seal to release the fluid path and in the second position controlling the controllable seal to close off the fluid path, the pressure sensor element on the one hand being exposed to the pressure prevailing in the fluid path downstream of the controllable seal, and on the other being exposed to a predetermined force which, in use, determines the predetermined pressure, wherein, in use, the pressure sensor element moves in the direction of the first position when the pressure prevailing in the fluid flow path downstream of the seal drops below the predetermined pressure determined by the predetermined force and the pressure sensor element moves in the direction of the second position when the pressure prevailing in the fluid flow path downstream of the seal rises above the predetermined pressure determined by the predetermined force, wherein the pressure control device comprises a gas tight chamber, the pressure sensor element comprising a movable wall accommodated in the chamber for movement in an axial direction of the chamber between the first and the second position, the space enclosed by the movable wall and the chamber being filled with a gas for generating said predetermined force and the movable wall being movable between the first and the second position in a direction parallel to the direction of the fluid path at the controllable seal, wherein: the movable wall is formed by a plunger accommodated in the chamber for movement in the axial direction of the chamber between the first and second position, the plunger and the controllable seal are movable between the first and the second position in a direction parallel to a direction from the inflow opening to the outflow opening, and the pressure control device is located in the proximity of the outlet.