Nitrogen/carbon dioxide mixing valves

Details Nitrogen/carbon dioxide mixing valves Nitrogen/carbon dioxide mixing valves

1987-08-12

1989-05-09

Hepperle, Stephen

Fluid handling

Self-proportioning or correlating systems

Mixture condition maintaining or sensing

137 7, 137114, 137209, 141 37, 222399, 251 75, F16K 1114

Patent

active

048279650

ABSTRACT:
N.sub.2 and CO.sub.2 are admitted, through separate valves actuated by single high hysteresis actuator, into a mixing device when the mixture is fed to a beer keg. The actuator is dependant upon the relative Co.sub.2 N.sub.2 mixture pressures so as to maintain the mixture pressure within predetermined limits and in one embodiment the use of a venturi mixing device ensures that the mixture composition remains substantially constant when the N.sub.2 and CO.sub.2 gases are at substantially different pressure.

REFERENCES:
patent: 968736 (1910-08-01), Brent
patent: 1365476 (1921-01-01), Fuller
patent: 2311061 (1943-02-01), Lutherer
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patent: 2800915 (1957-07-01), Tavener
patent: 3386065 (1968-05-01), Algino
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patent: 3476133 (1969-11-01), Stedfeld
patent: 3642021 (1972-02-01), Muller et al.
patent: 4364493 (1982-12-01), Raynes et al.
patent: 4549563 (1985-10-01), Monnier
patent: 4615352 (1986-10-01), Gibot

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