A system and method for dispensing fluids is introduced. A preferred embodiment comprises a sealed tank, a bag containing fluid inside the sealed tank, an outlet for dispensing the liquid in the bag, and a pressure generating device to create pressure in the sealed tank.
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1. A beverage dispensing system comprising: a cream container comprising: a first pressurized chamber;a first flexible liner within the first pressurized chamber, wherein the first flexible liner comprises flexible walls that allow pressure from the first pressurized chamber to be transferred to cre
1. A beverage dispensing system comprising: a cream container comprising: a first pressurized chamber;a first flexible liner within the first pressurized chamber, wherein the first flexible liner comprises flexible walls that allow pressure from the first pressurized chamber to be transferred to cream stored within the first flexible liner;a first pressure sensor configured to measure a first pressure on the first flexible liner;a first temperature sensor;a first liquid outlet; anda first air pump connected to the first pressurized chamber and configured to control the first pressure in the first pressurized chamber, the first pressure generating a first flow of cream out of the first liquid outlet;a concentrated skim milk container comprising: a second pressurized chamber;a second flexible liner within the second pressurized chamber, wherein the second flexible liner comprises flexible walls that allow pressure from the second pressurized chamber to be transferred to concentrated skim milk stored within the second flexible liner;a second pressure sensor;a second temperature sensor;a second liquid outlet; anda second air pump connected to the second pressurized chamber and configured to control a second pressure in the second pressurized chamber, the second pressure generating a second flow of concentrated skim milk out of the second liquid outlet;a water inlet;a combiner connected to the first liquid outlet, the second liquid outlet, and the water inlet; anda microcontroller connected to the first air pump, the second air pump, the first pressure sensor, the second pressure sensor, the first temperature sensor, and the second temperature sensor, the microcontroller configured to: receive a first signal from the first pressure sensor;introduce an amount of air inside the first pressurized chamber by sending a second signal to the first air pump;receive a third signal from the first pressure sensor after the amount of air is introduced; andadjust the first pressure to control a first flow rate of the first flow of cream after receiving the third signal. 2. The beverage dispensing system of claim 1, wherein the microcontroller is configured to control the first pressure relative to the second pressure at a first ratio for a first beverage. 3. The beverage dispensing system of claim 2, wherein the microcontroller is configured to control the first pressure relative to the second pressure at a second ratio for a second beverage different from the first beverage. 4. The beverage dispensing system of claim 2, wherein the first beverage is non-fat milk. 5. The beverage dispensing system of claim 2, wherein the first beverage is low-fat milk. 6. The beverage dispensing system of claim 2, wherein the first beverage is reduced-fat milk. 7. The beverage dispensing system of claim 2, wherein the first beverage is whole milk. 8. The beverage dispensing system of claim 2, wherein the first beverage is half & half. 9. The beverage dispensing system of claim 1, wherein the water comprises water from an external water line. 10. The beverage dispensing system of claim 9, wherein the water from the external water line is refrigerated. 11. The beverage dispensing system of claim 1, wherein the first flexible liner is disposed within a box disposed within the first pressurized chamber, the box comprising vent holes. 12. The beverage dispensing system of claim 11, wherein the box and the first flexible liner comprise a bag-in-box package. 13. The beverage dispensing system of claim 1, wherein the combiner is a nozzle. 14. The beverage dispensing system of claim 1, wherein the combiner is a mixing chamber. 15. The beverage dispensing system of claim 1, further comprising: a first flow rate monitor configured to monitor the first flow rate; anda second flow rate monitor configured to monitor the second flow rate. 16. A beverage dispensing system comprising: a mixing unit;a cream dispensing unit coupled to the mixing unit through a first line, the cream dispensing unit comprising: a first pressurized chamber with a first pressure sensor;a first air pump connected to the first pressurized chamber to generate a first pressure within the first pressurized chamber; anda first flexible liner to hold cream, wherein the first flexible liner is configured to transfer the first pressure to the cream to initiate a first flow of cream through the first line; line the first pressure sensor located to measure the first pressure being applied to the first flexible liner;a concentrated skim milk dispensing unit coupled to the mixing unit through a second line, the concentrated skim milk dispensing unit comprising: a second pressurized chamber with a second pressure sensor;a second air pump connected to the second pressurize chamber to generate a second pressure within the second pressurized chamber; anda second flexible liner to hold concentrated skim milk, wherein the second flexible liner is configured to transfer the second pressure to the concentrated skim milk to initiate a second flow of concentrated skim milk through the second line;a water inlet connected to the mixing unit through a third line to supply a third flow of water; anda microcontroller configured to receive first signals from the first pressure sensor and the second pressure sensor, and to control the first flow and the second flow by adjusting the first pressure and the second pressure. 17. The beverage dispensing system of claim 16, wherein the microcontroller is connected to the first air pump and the second air pump and is configured to control the first flow by modulating the first pressure and to control the second flow by modulating the second pressure. 18. The beverage dispensing system of claim 16, wherein the microcontroller is further configured to generate a first ratio of the first flow to the second flow for a first beverage and a second ratio of the first flow to the second flow for a second beverage different from the first beverage. 19. The beverage dispensing system of claim 18, wherein the first beverage is non-fat milk. 20. The beverage dispensing system of claim 18, wherein the first beverage is low-fat milk. 21. The beverage dispensing system of claim 18, wherein the first beverage is reduced-fat milk. 22. The beverage dispensing system of claim 18, wherein the first beverage is whole milk. 23. The beverage dispensing system of claim 18, wherein the first beverage is half & half. 24. The beverage dispensing system of claim 16, further comprising a product valve in the first line, the microcontroller being further configured to control the first flow through the product valve. 25. The beverage dispensing system of claim 16, wherein the water comprises water from an external water supply. 26. The beverage dispensing system of claim 25, wherein the water from the external water line is refrigerated. 27. The beverage dispensing system of claim 16, wherein the first flexible liner is disposed within a box disposed within the first pressurized chamber, the box comprising vent holes. 28. The beverage dispensing system of claim 27, wherein the box and the first flexible liner comprise a bag-in-box package. 29. The beverage dispensing system of claim 16, wherein the mixing unit is a nozzle. 30. The beverage dispensing system of claim 16, wherein the mixing unit is a mixing tank. 31. The beverage dispensing system of claim 16, further comprising: a first flow meter configured to measure the first flow; anda second flow meter configured to measure the second flow. 32. A beverage dispensing system comprising: a plurality of chambers for separately holding cream and concentrated skim milk, each one of the plurality of chambers comprising: a pressurized chamber;a pressure sensor for measuring a gaseous pressure;an air pump for controlling a pressure in the pressurized chamber;a liquid exit port from the pressurized chamber;a microcontroller configured to receive signals from the pressure sensor of each one of the plurality of chambers, the microcontroller connected to each one of the air pumps for the plurality of chambers and configured to control the pressures in the plurality of chambers and controlling the flow of materials through the liquid exit ports;a water inlet port; anda mixing unit connected to each one of the liquid exit ports and the water inlet port. 33. The beverage dispensing system of claim 32, wherein the microcontroller is further configured to control the flow of materials at a first ratio to dispense a first beverage. 34. The beverage dispensing system of claim 33, wherein the microcontroller is further configured to control the flow of materials at a second ratio to dispense a second beverage different from the first beverage. 35. The beverage dispensing system of claim 33, wherein the first beverage is non-fat milk. 36. The beverage dispensing system of claim 33, wherein the first beverage is low-fat milk. 37. The beverage dispensing system of claim 33, wherein the first beverage is reduced-fat milk. 38. The beverage dispensing system of claim 33, wherein the first beverage is whole milk. 39. The beverage dispensing system of claim 33, wherein the first beverage is half & half. 40. The beverage dispensing system of claim 32, wherein the mixing unit is a nozzle. 41. The beverage dispensing system of claim 32, wherein the mixing unit is a mixing tank. 42. The beverage dispensing system of claim 32, wherein each one of the plurality of chambers further comprises a flexible liner, wherein the flexible liner comprises flexible walls which allow pressure from the pressurized chamber to be transferred to liquid stored within the flexible liner. 43. The beverage dispensing system of claim 42, wherein the flexible liner is disposed within a box disposed within the pressurized chamber, the box comprising vent holes allowing pressurized air to pass through the box and apply pressure on the flexible liner. 44. The beverage dispensing system of claim 43, wherein the box and the flexible liner comprise a bag-in-box package.
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