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MSD Super Duplex Series Feed Pump

The MSD series multi-stage duplex centrifugal high-pressure feed pumps provide a new level of reliability and efficiency in seawater reverse osmosis (RO) pumps.

Loaded with unique features such as the patented Water Bearing™ product lubricated bearings, Super Duplex and Duplex stainless steel construction, and maintenance-free design ensure years of trouble-free operation.  No need for several pumps in parallel, the MSD line has a pump feed flow capacity range of 20 to 560 m3/h and efficiencies up to 84%.

MSD Low Flow models: MSD-40, MSD-70, MSD-130 with shelled design with Super Duplex Shell and shaft, Duplex stages standard, baseplate optional.

MSD High Flow models: MSD-160, MSD-200, MSD-350, MSD-400 bolted stage design with Duplex shaft and stages standard, Super Duplex material optional, baseplate optional.

FEATURES: High efficiency, fully custom engineered, patented product lubricated Water Bearing™ technology, precision leveling foot, Duplex construction, inlet rotation 90°
BENEFITS: Easy installation and operation, maintenance free design, corrosion resistant Duplex SS construction, robust and reliable service, 18 month warranty.


  1. Shaft seal operates at low pressure
  2. Flexible disc coupling
  3. Bearing drain line (low pressure)
  4. Stage support blocks
  5. Cut groove pipe joints
  6. Baseplate
  7. Flanged construction for easy internal inspection
  8. Inlet rotatable in 90° increments
  9. Easy shaft alignment
  10. Integrated motor adapter (anodized aluminum alloy)
  11. Duplex SS 2205 stages (Super Duplex SS 2507 optional)