HGM-RO Ring-section pump
Ring-section pump


Horizontal radially split product-lubricated multistage ring-section pump with radial impellers and plain bearings, axial and radial single-entry inlet. Duplex stainless steel variant or super duplex stainless steel variant, also suitable for chilled water applications.

Main Applications

  • Seawater desalination/reverse osmosis
  • Seawater injection
  • Handling cold water

Technical Data

  • Max. flow rate1850 m³/h
  • Max. head1140 m
  • Max. allowed working pressure120 bar
  • Max. allowed fluid temperature40 °C


  • Excellent smooth running with product-lubricated bearings
  • No auxiliary systems required for cooling or lubrication
  • Significant reduction of energy costs by optimised hydraulic system and high efficiency

Characteristic curves

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Technical Data

  • FunctionPump
  • Connection typeFlange
  • Drive conceptWith electric actuator, Turbine
  • Max. flow rate1850 m³/h
  • Min. flow rate300 m³/h
  • Max. head1140 m
  • Min. head150 m
  • Mains frequency50 Hz, 60 Hz
  • Mains voltage1000 V, 3000 V, 4160 V, 6000 V, 6600 V
  • Nominal pressurePN 160
  • Max. allowed working pressure120 bar
  • Suction behaviourNon-self-priming
  • Max. allowed fluid temperature40 °C
  • Min. allowed fluid temperature5 °C

Sectional Drawings