technical specifications as below: model power max head max capacity speed max suction discharge 1DB35 0.5hp 35m 2.4m3/H 2860r/min 8m 1"*1" 1DB45 0.75hp 45m 4.2m3/H 2860r/min 8m 1"*1" 1DB65 1hp 65m 5m3/H 2860r/min 8m 1"*1" QB60 0.5hp 35m 2.1m3/H 2860r/min 9m 1"*1" QB70 0.75hp 40m 2.7m3/H 2860r/min 9m 1"*1" QB80 1hp 50m 3.6m3/H 2860r/min 9m 1"*1"