DVSS Nuclear Pump

Brand: Flowserve Corporation

This ASME Section lll, Class 1 is designed for primary coolant, reactor re-circulation and primary heat transport service with Boiling Water Reactors (BWR), Pressurized Water Reactors (PWR), and Pressurized Heavy-Water Reactors (PHWR).
  • One-Piece Pump Casing Features A Double Volute Design For BWR And PHWR Applications And A Diffuser With A Torus-Type Casing For PWR Service.
  • Upgraded Rotating Element Uses A One-Piece Welded Shaft-Impeller-Journal Assembly. This Fully Machined Assembly Is Balanced As A Single Rotating Unit.
  • Hydrostatic-Pressurized Radial Bearing Operates Submerged In Radioactive System Water At Loop Temperature Of Approximately 300°C (580°F) With No External Source Of Cooling Water.



  • Vertical Single Stage

Operating Parameters

  • Discharge Pressures to 170 bar (2500 psi)
  • Flows to 24 500 m³/hour (108 000 gpm)
  • Heads to 250 m (820 ft)
  • Power Rating to 9400 KW (12,600 hp)
  • Speeds to 1800 rpm
  • Temperatures to 300° C (580° F)

Size Range

  • 12” to 36” Discharge

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