SOFT DRINK DISPENSING SYSTEM

摘要

A system is disclosed for dispensing and mixing metered amounts of first and second liquid components of a soft drink. The system comprises a mixing chamber connected by separate feed conduits to pressurized sources of the first and second liquid components. First normally closed valves are located in and demarcate the feed conduits into upstream and downstream sections. The first valves are openend automatically in response to pressure above a threshold level in their respective upstream conduit sections, and are operative when open to deliver a constant flow of liquid through their respective downstream conduit sections to the mixing chamber. Second normally closed valves are located in the upstream conduit sections. The second valves are opened in response to a command signal, and each second valve automatically closes in response to a drop in pressure blow the threshold level in the upstream conduit section of the other second valve.