Motorless carbonator pump with gas saving device

Details Motorless carbonator pump with gas saving device Motorless carbonator pump with gas saving device

B - Operations, Transporting

01

F

222/7.3

B01F 3/04 (2006.01) B67D 1/08 (2006.01)

Patent

CA 2029889

2029889 9011123 PCTABS00002 A motorless carbonator including a single acting pneumatic water pump (10) connected between a carbonator tank (30) and an uncarbonated water supply (28) with the pump having a gas return spring (90) integral therewith. The pump is driven by the carbon dioxide (CO2) fed to the carbonator tank. A CO2 saving device (54) is coupled between the water pump and the carbonator tank and includes a spring biased diaphragm (58) connected to a piston rod (68) and an O-ring support member (66) which operates to control the venting of CO2 to the atmosphere so as to reduce the amount of CO2 required to operate the pump during both a pumping stroke and a return stroke.

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