Fluid Dispenser Having Pressure Regulator

A pneumatic liquid dispenser for dispensing liquid, the pneumatic liquid dispenser comprising:

• a container having an interior for receiving the liquid therein and defining an opening in fluid communication with the interior of the container;
• a lid configured to be mounted on the container over the opening;
• passaging supported by the container when the lid is mounted on the container, the passaging including a gas supply connector, the gas supply connector defining a gas supply inlet of the pneumatic liquid dispenser, the passaging including a gas outlet and defining a gas flow path from the gas supply inlet to the gas outlet, the gas outlet being positioned to deliver pressurized gas from the passaging to the interior of the container when the lid is mounted on the container;
• a pressure valve fluidly connected with the passaging, the pressure valve including a valve member in the gas flow path between said gas supply inlet of the pneumatic liquid dispenser and said gas outlet of the passaging, the pressure valve being configured to automatically adjust the valve member to permit gas flow along the gas flow path when pressure in the interior of the container is less than a threshold pressure and to block gas flow along the gas flow path when pressure in the interior of the container is greater than the threshold pressure;
• a liquid passage configured to be fluidly connected to the interior of the container, and fluidly connected by the interior of the container to the passaging when the lid is mounted on the container;
• and
• a control valve fluidly connected with the passaging between said gas supply inlet and said gas outlet, the control valve being selectively adjustable between at least a dispensing configuration in which the control valve permits gas flow along the gas flow path to the gas outlet and a closed configuration in which the control valve blocks gas flow along the gas flow path to the gas outlet, the passaging comprising an evacuation passage downstream from the control valve, the control valve being selectively adjustable to an evacuation configuration in which the control valve blocks gas flow to said gas outlet and permits gas flow to the evacuation passage, the evacuation passage including a venturi configured to create vacuum pressure in the interior of the container;
• wherein the valve member of the pressure valve is at least partially in the control valve, the valve member of the pressure valve being movable in the control valve between an open position in which the valve member permits gas flow through the control valve and a closed position in which the valve member blocks gas flow in the control valve.