... irrigation and drainage,pump station and so on water pumpOTK65-270B Q=68m3/h,H=194m, speed=2900rpm,efficiency=73%, shaft ... , Nominal impeller dia=275mm, flange inlet=100mm, flange outlet=65mmOTK65-270B Q=61m3/h,H=159m, speed=2900rpm,efficiency=71.5 ... , Nominal impeller dia=255mm, flange inlet=100mm, flange outlet=65mmOTK65-270B Q=57m3/h,H=135m, speed=2900rpm,efficiency=70%, shaft ...