| 摘要 |
A carbonated beverage (38) is conveyed from a source (12) to a closed reservoir (28) at a first pressure level. The pressure in the reservoir (28) is controlled by selectively venting gas and adding pressurized gas to the reservoir (28) to maintain the carbonated beverage (38) at a second pressure level that is less than the first pressure level and substantially greater than atmospheric pressure. The carbonated beverage (38) is dispensed from th e reservoir (28) into a serving container by reducing the pressure in the reservoir (28) to substantially atmospheric pressure and then opening an outlet valve (62). During prolonged periods when dispensing is not occurring the pressure in the reservoir (28) may be increased to prevent degassing of the carbonated beverage (38). In that case, the reservoir (28) pressure is reduced to the second pressure level before another dispensing operation.</S DOAB>
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