HSD Split Case Pump

Horizontal, axially split case pump (BB1)

HSD horizontal split case pump
HSD horizontal split case pump
The HSD pump is a horizontal, single stage, axially split case centrifugal pump designed and built acording to the Hydraulic Institute (HI) standard (BB1 type). It is part of the HS/ZW range of split case pumps by Ruhrpumpen which includes the: HSC, HSL, HSR, HSM and ZW models.

Operation limits

Capacity up to 1,590 m³/h (7,000 gpm)
Head up to 168 m (550 ft)
Maximum Pressure up to 18 bar (250 psi)
Temperature 10 to 120 °C (50 to 250 °F)
Discharge flanges sizes 1½'' to 12''
Applications Petrochemical, general industry applications, power generation plants, municipal water systems, mining operations, fire protection service.



Horizontal, between bearings, single stage, axially split centrifugal pump.

  • Hydraulic Institute (HI) design - BB1 type*
  • High efficiency, foot mounted design
  • Axially split case, single volute design minimizes thrust loads
  • Flanged connections
  • Side-side nozzle configuration
  • Double suction, enclosed impellers provide hydraulic balance eliminating axial thrust
  • Clockwise or counterclockwise rotation
  • Grease or oil lubricated bearings
  • Stuffing box configured for packing or mechanical seal
  • Renewable wear rings
  • Horizontal or vertical mounting arrangements available

*For API build, check the ZM pump range

  • Cast iron
  • Cast iron, stainless steel fitted
  • All bronze
  • All WCB grade carbon steel
  • All stainless steel

Other materials available upon request

Pump for safe drinking water

The HSD is NSF ANSI 61/372 compliant and adheres to the latest lead-free requirements of the U.S. Safe Drinking Water Act.

Pump Performance Chart

Pump curve for RP's axially split case pumps: HSC, HSD, HSL, HSR, HSM, ZW

Ruhrpumpen axially split case pumps performance chart