Deep Well Units

Pleuger deep well submersible pump units are single-stage or multi-stage centrifugal pumps, typically coupled with water-filled motors as standard. They can be fitted with oil-filled motors for special applications. The motor is assembled below the pump and the suction area is located above the motor. Deep well units are available as standard configuration from 4″ motor size or as customized design from 6″ motor size.

Pleuger deep well units for a variety of applications across industries


  • Pumps with flanged bowl designs (starting from 6“/ P, Q, K, S – series)
  • Pumps with tie-rod designs (4” – 8” / N – series)
  • Pumps with radial-, semi-axial and axial-design hydraulics
  • Individual customization to duty point requirements (starting from 6”)
  • Non-return valves and non-return-flaps in different connection sizes and designs
  • Rewindable motors from 4” to 50”
  • Synchronous (Permanent Magnet Motors) and asynchronous induction motors
  • As standard design water-filled motors
  • Oil-filled motors for special applications
  • Internal volume and pressure compensating motor design
  • Improved internal cooling system for 10” motor size and bigger
  • Units for vertical, inclined and horizontal applications
  • Multiple materials available
  • Pumps and motors for special applications
    • Twin-shaft motors
    • Motors with additional/external cooling systems
    • Motors for explosive atmosphere applications 
    • Motors for special voltage requirements
    • Motors according to customer specifications
    • Units for turbine operation and energy recuperation
    • Units for hot water applications

Available designs

  • Well- / deep well pump units (motor assembled below pump)


  • Engineered and manufactured in-house to ensure end-to-end quality and assurance
  • Worldwide operating service network
  • Versatile product sizes and designs for all application areas
  • Maintenance-free
  • Internal volume and pressure compensating motor design for high operational safety and reliability in extreme installation depths
  • Very quiet operation / low noise emission
  • Protected against vandalism
  • Flood-proof (IP68) and frost-proof
  • Environmentally friendly
  • Easy installation without complex adjustment or alignment work
  • Slim design for small well diameters


  • Groundwater development 
  • Municipal water supply 
  • Water treatment and distribution
  • Potable water supply 
  • Deep- and Bore well pumps
  • Desalination
  • Storage reservoirs
  • Water level control and draw-down
  • Mining (dewatering and water supply)
  • Agriculture (irrigation and drainage)
  • Construction 
  • Swimming Pool technology
  • Seawater lift- and Drain Caisson pumps
  • Emergency Drain pumps
  • Process pumps
  • Cooling pumps 
  • Jockey- and Firefighting pumps
  • Wash-down pumps
  • Ballast pumps
  • Service and Bilge pumps
  • Crude oil export pump
  • Pumping of refinery products like diesel, gasoline and liquid gases like LPG (Butane, Propane) and LNG 
  • Cavern storage of crude oil and refinery products
  • Pipelines
  • Leak water pumps for caverns
  • Water injection
  • Geothermal well service
  • Hot water transfer (greenhouses, district heating, thermal bath, etc.)
  • Solar power
  • Offshore and onshore

Technical Details

  • Discharge flow: 1 m³/h – 7.000 m³/h
  • Discharge head: 2 m – 700 m (23 ft – 2,297 ft)
  • Non-return valves with DIN or ANSI/ASME Flange Connections
  • Non-return valves with DIN or NPT Flange Connections
  • 4″-motors: 0.37 kW – 5.5 kW
  • Motors from 6” to 50” with rewindable design
  • Water-filled motors as standard, or oil-filled motors for special applications: 0.37 kW – 5 MW (0.5 HP to 6,700 HP)
  • Water-filled synchronous motors (Permanent Magnet Motors): 5 kW – 200 kW (268 HP)
  • Voltage range: 230 V – 6.6 kV (11 kV on request)
  • 2-pole to 12-pole motor designs for 50 Hz and 60 Hz
  • Multiple materials available
  • Pump impellers in PPE plastic, bronze, stainless steel or Super Duplex
  • Pump bowls in cast iron, bronze, stainless steel and Super Duplex



Design Standards: NSF, API, ANSI, ASTM, EN, ISO, DIN, NORSOK, Customer specific
Hydraulic Standards: API, ANSI/HI, EN, ISO, NFPA 20
Electrical Standards: EC, IEEE, NEMA