HPK Dry-installed pump
Dry-installed pump


Horizontal radially split volute casing pump in back pull-out design, with radial impeller, single-entry, single-stage, to ISO 2858 / ISO 5199. Optional TRD type testing by TÜV. ATEX-compliant version available.
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Main Applications

  • Pump for handling hot water and organic or synthetic heat transfer fluids in piping or tank systems.
  • Heating systems
  • Forced circulation boilers
  • District heating
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Technical Data

  • Max. flow rate4800 m³/h
  • Max. head275 m
  • Max. allowed working pressure40 bar
  • Max. allowed fluid temperature240 °C


  • Hydraulic system, nominal data and dimensions to ISO 2858 / EN 22858
  • Continuous lubrication and oil level monitoring by constant level oiler
  • Back pull-out design allows the casing to remain in the piping while the pump is dismantled.

Characteristic curves

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TitleFormatSizeLast change
icon download-pdfProduct Introduction HPK (1121.12_010)pdf0.425/24/2019
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icon download-pdfOil Level Gauge (1070.816_EN)pdf0.715/24/2019
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icon download-pdfSuppl. OI HPK, Design features improving the service life (1121.8126_010)pdf0.569/18/2020
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TitleFormatSizeLast change
icon download-pdfType series booklet HPK (1121.51_010)pdf0.555/24/2019

Technical Data

  • FunctionPump
  • Connection typeFlange
  • Drive conceptWith electric actuator
  • Max. flow rate4800 m³/h
  • Min. flow rate1 m³/h
  • Max. head275 m
  • Min. head2 m
  • Mains frequency50 Hz, 60 Hz
  • Mains voltage400 V, 460 V
  • Casing material1415, 1877, 2349
  • Nominal pressurePN 40
  • Max. allowed working pressure40 bar
  • Suction behaviourNon-self-priming
  • Max. allowed fluid temperature240 °C
  • Min. allowed fluid temperature5 °C

Sectional Drawings

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