BGOULDS PUMPS GT20 IRRI-GATOR Self-Priming Single Phase Centrifugal Pump, 2 hp, Blue ReviewbP PP GOULDS PUMPS GT20 IRRI-GATOR Self-Priming Single Phase Centrifugal Pump, 2 hp, Blue PSelf-Priming Design: Once pump is primed, it will reprime as water level rises above suction pipe.