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Grundfos BMS – Booster Module Pumps

Grundfos BMS hs — Grundfos BMST — Grundfos BMSX

The BMS range is a completely new range of booster modules mainly used for reverse osmosis and (ultra-) filtration applications that improve efficiency compared to earlier ranges.
It features a directly coupled pump powered by a permanent magnet motor and VFD.

The BMS range comes in 3 different combinations:
BMS hs: High pressure booster system.
BMST: High pressure booster system with energy recovery via turbine.
BMSX: High pressure booster system with energy recovery via pressure exchanger.


  • Reverse Osmosis systems
  • Ultra filtration systems
  • Filtration systems
  • Pressure boosting systems
  • Water supply


  • Energy savings due to high efficiency
  • Easy maintenance and alignment due to improved design
  • Easy integration in any water treatment system
  • Extreme durability and reliability
  • Very small footprint
  • Designed for high flows and pressure
  • Speed ramp up and down are included
  • VFD pre-set at duty point

Technical Data

  • All critical components are super duplex stainless steel suitable for use in seawater and brackish water applications
  • The shaft seal is made from carbon/silicon carbide, especially designed for high pressure
  • The thrust bearing material is ceramic and carbon
  • Pump bearings and seal rings are made of NBR rubber
  • Built-in thrust bearing absorbing the axial thrust from the pump