Self-priming assembly for use in a multi-stage pump

Abstract

A self-priming assembly for a multi-stage pump is provided. The self-priming assembly includes a first diffuser with a first central portion, a first diffuser axis, a first arcuate channel within the first central portion, and a first arcuate passage extending through the first central portion and a first peripheral portion having a first ledge. The self-priming assembly also includes a second diffuser with a second central portion, a second diffuser axis, a second arcuate channel within the second central portion, a second arcuate passage extending through the second central portion, and a second peripheral portion having a second ledge. The first ledge abuts the second ledge. Further, the self-priming assembly includes an impeller with an impeller axis. The first diffuser and the second diffuser are configured to be combined and to receive the impeller therebetween with the first diffuser axis, the second diffuser axis, and the impeller axis aligned.

Dependencies are inferred from the claim text.