Pressure regulating valve for pressure driven beverage dispensing apparatuses
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United States of America Patent
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Dec 13, 2016
Grant Date -
Dec 6, 2012
app pub date -
Dec 16, 2010
filing date -
Dec 18, 2009
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Abstract
Pressure regulating valve for controlling the pressure at which a pressurized propellant gas is injected into a container containing a liquid for driving said liquid out of the container, said valve comprising: A first and a second polymeric shells, the first shell comprising a gas inlet and outlet openings, and the second shell containing means for resiliency biasing. A polymeric membrane, clamped between the first and second shells, thus defining a first and a second chambers sealingly separated by the membrane. A joint between the first and second polymeric shells, strong enough to withstand the pressures reigning in either chamber and ensuring fluid tightness between the two chambers; wherein, all polymeric components of said pressure regulating valve are made of the same polymer class.
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