A.Y. McDonald 89100 E-Series Self Priming Sprinkler Pump 1.0 HP 115/230VA. Y. McDonald's E Series Sprinkler Pump is designed with a 1 1 2" inlet and outlet with a flow up to 85 GPM. With an easy switch between 115V and 230V and a 304 stainless steel insert on the impeller, this high quality pump also contains a stainless steel wear ring between the impeller and diffuser. The E Series Sprinkler Pump is available in 1, 1 1 2 and 2 HP and comes with a reliable, robust and tested motor. A. Y. McDonald 89000 E Series Self