Main applications hph

  • Boiler circulation
  • Boiler feed systems
  • Cooling water and condensate
  • Energy
  • Heat transfer, Cooling circuits
  • Industry engineering
  • Power Stations < 100 MW
  • Power Stations > 100 MW
  • Special processes
  • Steam and hot water, district heating
  • Steam circuits

Design hph

Horizontal radially split volute casing pump in back pull-out design, with centreline pump feet, with radial impeller, single-entry, single-stage. Optional TRD type testing by TÜV. ATEX-compliant version available.

Application pump hph

Pumping hot water in high-pressure hot water generation plants, as boiler feed or recirculation pump

Technical data

  • Q max 1,900.0 m³/h
  • H max 225.0 m

Fields of Application pump hph

HPH pumps are suitable for handling hot water in high-pressure hot water generating plants.
They are used as feed and circulating pumps.
HPH has been type-tested to TRD (German Steam Boiler Regulations) by TÜV (Technical Control Board). Type test certificates can be offered and supplied on request.

Desing Details pump hph


  • closed radial impeller
  • with multiply curved
  • vanes, hydraulically
  • balanced


  • not in contact with the fluid
  • handled (dry shaft, therefore no special materials required)


up to PN 160 to DIN, other flange designs possible


Radially split volute casing with replaceable casing wear ring and integrally cast centreline pump feet.
The pressure-retaining pump chamber is closed off towards the motor side by means of a bearing bracket lantern with integrated cooling chamber.

Overview of technical data hph

Q (50Hz)2.5 – 1,900.0 (m³/h)
H (50Hz)4.0 – 225.0 (m)
Type of bearingRolling element bearings
Casing partitionRadially split
Drive frequency50 Hz /60 Hz
Type of driveElectric motor
Drive voltageLow voltage
No. of impeller entriesSingle entry
Impeller material (EN standard)JS 1025, 1.4408, JL 1040
Type of installationLong-coupled
Type of couplingDirect
Type of lubricationOil lubrication
Max. permissible fluid temperature320.0 (°C)
Nozzle positionEnd suction
Maximum operating pressurePN 100
Pull-out designYes
Pump set locationDry installed
Shaft material (EN standard)1.7709 VS
Suction characteristicsNon-priming
Type of casingVolute casing
Type of impellerRadial, Multi-vane impeller, Closed
Type of connectionFlange
Casing material (EN standard)GP240GH+N, 1.7706, 1.4931
eClass assignment36410101, 36410000, 36410100
Installation positionHorizontal
Shaft seal typeMechanical seal
Main applicationsEnergy, Industry and process engineering
Casing materialCast stainless steel, Cast steel
Maximum discharge-side pressure110.0 (bar)
Maximum drive rating490.0 (kW)
Type of installationStationary
Maximum speed of rotation3500.0 (1/min)