Main applications

  • Building services
  • Cooling water and condensate
  • Energy
  • Fire fighting and sprinkler systems
  • Irrigation
  • Power Stations < 100 MW
  • Power Stations > 100 MW
  • Pressure boosting, fire fighting systems
  • Water supply
  • Water transport

Technical data

Q max 2,500.0 m³/h
H max 250.0 m


Multi-stage deep-well turbine pump with mixed flow impellers. Dry-installed electric motor or combustion engine. Discharge nozzle arranged above or below floor level, model for dry installation.


Water and non-corrosive fluids, drinking water (ACS-approved), general industry, water supply, fire protection, pressure boosting, irrigation, etc.

Further technical information about Wellstar

Overview of technical data

Q (50Hz) 7.0 – 2,500.0 (m³/h)
H (50Hz) 0.0 – 250.0 (m)
Type of bearing Rolling element and plain bearings
Borehole diameter (inc 06, 22
Drive IEC standardized motor, electric motor
Drive frequency 50 Hz /60 Hz
Type of drive Electric motor
Drive voltage Low voltage
Type of first impeller Mixed flow
Other impeller types Mixed flow
Maximum submergence 120.0 (m)
Impeller material (EN standard) JL 1040, CC480K-GS
Type of installation Long-coupled
Type of coupling Direct
Type of lubrication Oil lubrication
Max. permissible fluid temperature 60.0 (°C)
Nozzle position Horizontal
Maximum operating pressure 25
Pump set location Wet well
Shaft material (EN standard) 1.4021
Stage casing material (EN standard) CC480K-GS, JL 1040
Suction casing material (EN standard) CC480K-GS, JL 1040
Suction characteristics Non-priming
Suitable for drinking water Yes
Top plate Yes
Type of impeller Mixed flow impeller
Type of connection Flange
Type of discharge casing Stage casing with diffuser
Type of stage casing Stage casing with diffuser
Type of suction casing Stage casing with diffuser
UNSPSC classification 4015150300
Casing material (EN standard) JL 1040
eClass assignment 36410101
Installation position Vertical
Shaft seal type Gland packing, Mechanical seal
Main applications Industry and process engineering, Water, Building services
Casing material Cast iron, Bronze
Maximum discharge-side pressure 25.0 (bar)
Maximum drive rating 500.0 (kW)
Type of installation Stationary
Maximum speed of rotation 3500.0 (1/min)
Starting method Direct, Star-delta, Controlled, Continuously variable speed control