Patent ID: 7017621

Claim:
An anti-foam splash-proof nozzle for filling containers, comprising: an air gap section, said air gap section comprising: a hollow barrel having a water inlet and lateral openings; an elastic sleeve surrounding said barrel and forming therewith a resiliently openable seal, said sleeve, when said seal is opened, defining a water path between said barrel and said sleeve into said plenum while at the same time sealing said plenum against ambient air; a venturi section, said venturi section comprising: a venturi; a water inlet from said plenum to said venturi; a passage for conveying a foam-prone chemical into the throat of said venturi to mix it with water flowing through said venturi; and an outlet adapted to communicate with a container to be filled; wherein said venturi section is comprised of integrally molded plastic; and a plenum between said air gap section and said venturi section, said plenum being in communication with ambient air in the absence of water flow.