Patent ID: 7954507

Claim:
An eductor for mixing first and second liquids comprising: a body member providing a longitudinal axis; a flow path extending longitudinally through the body member, the flow path defined by a first flow guide and a second flow guide, the first flow guide defined by at least one unapertured wall extending to an end of the flow guide and extending to the second flow guide and having interior surfaces converging toward the second flow guide, the second flow guide constructed and arranged to receive liquid from the first flow guide; a closed back flow prevention member operatively associated with the first flow guide; a venturi tube in the flow path for receiving liquid from the second flow guide, the second flow guide and the venturi tube connected by a passage portion; an opening in the passage portion, the opening constructed and arranged to produce a desired vacuum in the venturi tube; and at least one channel lateral to the longitudinal axis for flowing a liquid concentrate into the venturi tube; and the flow path further including a discharge passage extending from the venturi tube to the outside of the body member.