HSR Split Case Pump

Horizontal, axially split case pump (BB1)

HSR pump by Ruhrpumpen single stage horizontal split case pump
The HSR 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, HSD, HSL, HSM and ZW models.

Operation limits

Capacity up to 2,050 m³/h (9,000 gpm)
Head up to 155 m (500 ft)
Maximum Pressure up to 28 bar (400 psi)
Temperature 10 to 150 °C (50 to 300 °F)
Discharge flanges sizes 1½'' to 16''
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 HSR 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