Fluid Dispenser and Evacuator

A liquid flow device for selectively dispensing liquid or evacuating liquid from a source of liquid, the device comprising:

• a container defining an interior and an opening in fluid communication with the interior;
• 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 passage configured to be fluidly connected to a source of pressurized gas;
• a pressurization passage configured to be fluidly connected to the gas supply passage, the pressurization passage being positioned to deliver pressurized gas from the gas supply passage to the interior of the container when the lid is mounted on the container;
• an evacuation passage including a venturi and configured to be fluidly connected to the interior of the container when the lid is mounted on the container, the evacuation passage being configured to be fluidly connected to the gas supply passage to convey pressurized gas from the source of pressurized gas through the venturi to create a vacuum pressure in the interior of the container;
• and
• 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 pressurization passage and the evacuation passage when the lid is mounted on the container;
• a control valve in fluid communication with and downstream from the gas supply passage and in fluid communication with and upstream from the pressurization passage and the evacuation passage, the control valve being selectively adjustable between at least a dispensing configuration in which the control valve is configured to permit fluid communication between the gas supply passage and the pressurization passage and an evacuation configuration in which the control valve is configured to permit fluid communication between the gas supply passage and the evacuation passage;
• and
• mode selector valving different from the control valve, the mode selector valving being operable to selectively block flow of gas along the pressurization passage between the control valve and the interior of the container and operable to selectively block flow of gas along the evacuation passage from the interior of the container;
• wherein the pressurization passage includes a first portion downstream from the mode selector valving for fluid communication with the interior of the container, the first portion of the pressurization passage being different from the evacuation passage;
• wherein the evacuation passage includes a first portion upstream from the mode selector valving for fluid communication with the interior of the container, the first portion of the pressurization passage being different from the pressurization passage.