... station and big steel plant and so on water pumpOTK80-250A Q=115m3/h H=163m Speed=2900rpm Efficiency=77.5 ... dia of impeller=254mm , Flange Inlet=100mm, Flange Outlet=80mmOTK80-250A Q=109m3/h H=138m Speed=2900rpm Efficiency=76.5 ... dia of impeller=236mm , Flange Inlet=100mm, Flange Outlet=80mmOTK80-250A Q=104m3/h H=117m Speed=2900rpm Efficiency=74% shaft ...