Multi-Stage Ring Section Pumps

Multi-Stage Ring Section Pumps


Centrifugal, single-casing radially split between bearing pumps is designed in a modular way based on different ranges of pressures for use in a wide range of applications, primarily for pumping clean or slightly polluted liquids. These pumps are also known as side channel pumps, or liquid ring pumps.

Features & Benefits

  • Mid- to high-pressure.
  • Modular hydraulics for high efficiency in a wide range of operating conditions.
  • Fast and easy impeller mounting.
  • Simple construction to minimize dimensions and reduce investment and maintenance costs.
  • Centerline mounted with large branch sizes for optimized inlet flow, low noise level and higher allowable forces and moments.
  • High-quality investment cast impellers and diffusers for improved efficiency.
  • Double suction first-stage impeller available for selected pump sizes.
  • Vertical design available.
  • Long and trusted experience in all industrial segments.
  • Single or double packing or mechanical seal.
  • Clock-wise rotation (viewed from coupling end).
  • Available in base-mounted and drive-coupled configurations.

Construction Materials

  • Cast Iron
  • Carbon Steel
  • Chromium Steel
  • Other materials available upon request


  • Water Circulation
  • Process Water
  • Power Plants
  • Combined Heating & Power Stations
  • High Pressure Applications
  • Boilers
  • General Industry
  • Irrigation
  • Mining
  • Washing Systems
  • Chemical & Petrochemical
  • Chilled & Hot Water Systems
  • HVAC


  • Flows to 300 m3/h (1320 gpm)
  • Heads to 600 m (1960 ft)
  • Temperatures to 105°C (221°F)
  • Viscosity to 20 cSt (100 SSU)
  • Solids to 0.2 mm (0.008")
  • Power to 800 kW (1073 hp)
  • Speeds to 2,900 rpm

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