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A carbonated drink dispensing system includes a carbonation tank, a CO2 cylinder configured to deliver CO2 to the carbonation tank at a pressure of between 50 psi and 60 psi, a lowpressure pump configured to pump water into the carbonation tank, and a level sensor configured to determine when the water in the carbonation tank has reached a pre-determined level. The lowpressure pump is configured to stop pumping water when the level sensor determines that the water in the carbonation tank has reached the pre- determined level. The low-pressure pump starts pumping water again after a time delay