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SQ Series

The SQ Series is Grundfos’ most compact submersible solution for ground water extraction. A mere 3” in diameter, the long, lean pump fits nicely into small boreholes of the same size – or in 4” boreholes that over time have become smaller due to ochre deposits.

The compact design along with key features like dry running protection and soft start to reduce wear on motor makes the SQ pump one of the most reliable choices for submersible operation.

Benefits include:

  • Unique 3” design
  • Wide voltage window
  • Soft start – reduces wear on motor and minimises stress of the entire installation
  • Dry-running protection
  • Overload protection
  • Automatic restart
  • All stainless steel exterior design – reduces risk of corrosion to a minimum
  • Built-in electronics – facilitate installation and operation
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SQ Series
  • Features
  • Applications
  • Curves
  • Tech Specs
  • Downloads
  • Soft start and low amp draw
  • High starting torque & deep setting handling
  • 2 wire & no extra box needed
  • Handle voltage fluctuation, protection and automatic restart
  • Dry-running protection
  • Soft start
  • Built-in electronics
  • Permanent magnet motors
  • Domestic water supply
  • Small water works
  • Irrigation systems
  • Groundwater lowering

Grundfos SQ curve

• Performance range: Flow up to 7m3/h (SQ/SQN 7)
• Head up to 180m (SQ/SQN 1)
• Nominal voltage range: 1×200-240V
• Frequency: 50/60Hz
• Max. acceptable media temp: 30 °C (40 °C)
• Pump diameter: Ø74 mm
• Weight (min./max.): 4.7-6.4 kg
• Thread connections: RP 1¼/ RP 1½
• Minimum well diameter: Ø76 mm
• Materials (Stainless steel): SQ- DIN W.-Nr. 1.4301, AISI 304,
• The SQ pump can be installed vertically or horizontally

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