An air jet includes a body portion defining a hollow main body portion having an interior opening, and a connection portion having an air passageway in communication with the interior opening. The connection portion includes at least one connection port for attachment to a hose carrying pressurized air, and a flange portion defining a recessed mount surface inside a peripheral lip surrounding a recess, with a plurality of open regions defined in the peripheral lip. At least one protrusion is defined between the peripheral lip and the interior opening to reduce the volume of the recess and the amount of adhesive for installation of the air jet to the wall of the vessel. A nozzle member is fitted into the interior opening and has a nozzle orifice and nozzle tip protruding into the recess.
