Pressure regulating system for a beverage container and beverage container provided therewith

A pressure regulating system for a beverage container system, comprising a first compartment for containing a pressurized gas, in fluid communication with a surrounding space through at least a gas valve for opening and closing a passage between the first compartment and surrounding space, wherein a gas valve control system is provided, comprising a deformable and/or movable wall or wall part, wherein said deformable and/or movable wall part is operably in contact with the at least a gas valve for opening and/or closing the at least a gas valve, wherein a second compartment is provided at a side of said deformable and/or movable wall part, said movable and/or deformable wall part forming a wall of said second compartment, wherein the second compartment forms a pressure regulating space and comprises a wall part formed by or comprising at least a gas permeable, liquid tight permeable wall part, and

• having a configuration that leads to a ξ (Zeta) that is in the range of 0.00125 to 0.005 (1/s) wherein ξ is defined by:
• ζ
• =
• RT
• ⁢
• β
• ·
• A
• perm
• V
• ch
• ⁢
• dperm
• wherein R=the gas constant, T=temperature in the second compartment (K), β=permeability [mol/m·s·Pa], Aperm=surface area for permeation of the at least a gas permeable wall part, Vch=Chamber volume of the second compartment, and Dperm=thickness of the at least a gas permeable wall part.

A pressure regulating system for a beverage container system, comprising a first compartment for containing a pressurized gas, in fluid communication with a surrounding space through at least a gas valve for opening and closing a passage between the first compartment and surrounding space, wherein a gas valve control system is provided, comprising a deformable and/or movable wall or wall part, wherein said deformable and/or movable wall part is operably in contact with the at least a gas valve for opening and/or closing the at least a gas valve, wherein a second compartment is provided at a side of said deformable and/or movable wall part, said movable and/or deformable wall part forming a wall of said second compartment, wherein the second compartment forms a pressure regulating space and comprises a wall part formed by or comprising at least a gas permeable wall part, wherein the at least a gas permeable wall part is liquid tight and stiff such that the at least a gas permeable wall part will not deform when there is a pressure difference over the at least a gas permeable wall part, wherein the at least a gas permeable wall part is supported by a support, wherein the support comprises at least two layers, on opposite sides of the at least a gas permeable wall part, having at least one opening each for allowing passage of the gas to and from the at least a gas permeable wall part.

A pressure regulating system for a beverage container system, comprising a first compartment for containing a pressurized gas, in fluid communication with a surrounding space through at least a gas valve for opening and closing a passage between the first compartment and surrounding space, wherein a gas valve control system is provided, comprising a deformable and/or movable wall or wall part, wherein said deformable and/or movable wall part is operably in contact with the at least a gas valve for opening and/or closing the at least a gas valve, wherein a second compartment is provided at a side of said deformable and/or movable wall part, said movable and/or deformable wall part forming a wall of said second compartment, wherein the second compartment forms a pressure regulating space and comprises a wall part formed by or comprising at least a gas permeable wall part, wherein the at least a gas permeable wall part is liquid tight and stiff such that the at least a gas permeable wall part will not deform when there is a pressure difference over the at least a gas permeable wall part, wherein the at least a gas permeable wall part comprises or is enclosed in a support, wherein the support comprises at least two layers, on opposite sides of the at least a gas permeable wall part, having at least one opening each for allowing passage of the gas to and from the at least a gas permeable wall part.