HPK-L Dry-installed pump
Dry-installed pump


Horizontal radially split volute casing pump in back pull-out design to ISO 2858 / ISO 5199, single-stage, single-entry, with radial impeller. Equipped with heat barrier, seal chamber air-cooled by integrated fan impeller, no external cooling. 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 rate1400 m³/h
  • Max. head233 m
  • Max. allowed working pressure40 bar
  • Max. allowed fluid temperature400 °C


  • Low temperature in the mechanical seal chamber; no cooling water required thanks to air-cooled bearing bracket with heat barrier.
  • Increased operating reliability of versions for heat transfer applications by an optional two mechanical seals preventing leakage.
  • Higher efficiencies than the previous HPK-L model by continued development of the flow passage within the hydraulic system.

Characteristic curves

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TitleFormatSizeLast change
icon download-pdf1136.3-YTO-090-02-PDF (1136.3_090)pdf0.065/24/2019
TitleFormatSizeLast change
icon download-pdfHPK-L; Product Generation B (1136.51_EN)pdf6.45/24/2019
TitleFormatSizeLast change
icon download-pdfHPK-L (Global Pump) (1136.521_EN)pdf0.115/24/2019

Technical Data

  • FunctionPump
  • Connection typeFlange
  • Drive conceptWith electric actuator
  • Max. flow rate1400 m³/h
  • Min. flow rate1 m³/h
  • Max. head233 m
  • Min. head3.5 m
  • Mains frequency50 Hz, 60 Hz
  • Mains voltage400 V, 460 V
  • Casing material2349, 2420
  • Nominal pressurePN 40
  • Max. allowed working pressure40 bar
  • Suction behaviourNon-self-priming
  • Max. allowed fluid temperature400 °C
  • Min. allowed fluid temperature-40 °C

Sectional Drawings