AquaFlo Dominator Medium & High Head Pump Impellers 35-402-1218 Impeller, 1/2HP, Med Head 91692405 35-402-1220 Impeller, 3/4HP, Med Head (Val-Pak) 91692455 35-402-1224 Impeller, 1.5HP, Med Head 91692555 35-402-1318 Impeller, 1/2HP High Head 91692400 35-402-1320 Impeller, 3/4HP High Head 91692450 35-402-1322 Impeller, 1.0HP High Head 91692500 35-402-1324 Impeller, 1.5HP High Head 91692550