a pump assembly includes a pump housing including an inner surface , a pump inlet and an excess flow passage , a filter assembly including a spout extending into the housing , and an insert located within and secured to the housing , and including a first surface spaced from the inner surface and producing therebetween an annular nozzle communicating with said excess flow passage , the nozzle directing a first fluid stream exiting the excess flow passage toward a second fluid stream exiting the spout , the fluid streams flowing toward the pump inlet .