Patent attributes
A pressure regulator for dispensing CO2 gas from a pressurized cylinder which has a reduced probability of freezing when liquid carbon dioxide is converted to the gaseous phase. A plunger which is configured to increase the length of the gas flow path between the regulator inlet and the regulator outlet, and thus to allow liquid CO2 more time to convert to a gas before egressing from the regulator. In the preferred embodiment orifices are provided through the plunger head and spaces are provided about the periphery of the plunger head, which allow the CO2 liquid to flow from the underside of the plunger through the plunger head, over the top of the plunger and about the side of the plunger head before egressing through the regulator outlet.
