... station, agricultural irrigation and drainage and so on water pumpOTK80-250B Q=98m3/h H=151m Speed=2900rpm Efficiency=77% shaft ... dia of impeller=254mm , Flange Inlet=100mm, Flange Outlet=80mmOTK80-250B Q=88m3/h H=130m Speed=2900rpm Efficiency=75% shaft ... dia of impeller=236mm , Flange Inlet=100mm, Flange Outlet=80mmOTK80-250B Q=82m3/h H=113m Speed=2900rpm Efficiency=73% shaft ...