US Patent 9731954 Fluid dispensor with isolation membrane

A beverage dispenser is configured as an outer pressure vessel (12) with one or more internal liner bags (11) for respective content, the dispenser having one or more content pathways, a selector valve connected to the content pathways for selection and proportion mix, a pressurization port in the container for charging the container externally of the liner bags and to promote discharge through the pathways, a bleed valve from a pressurized gas supply for selective gas injection at or close to a point of dispensing with a facility to pre-mix and feedback the pre-mix to a dedicated liner bag.