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Inline Constant Water Pressure System provides consistent water pressure regulation using advanced electronics to drive the pump/motor according to the system's real-time demand. The Little Giant 25LGIL1100N4 includes highly accurate, heavy-duty, longlife pressure sensor for constant monitoring of the water pressure demand.

By adjusting the pump/motor speed, the Inline System automatically reacts to any change in system demand while maintaining a constant output pressure. The Inline System's constant output pressure should not fluctuate more than a PSI or two, even though the overall system's water flow requirement may change dramatically. Small demand on the system results in the motor/pump running at its lowest speed. As greater demands are placed on the system the speed increases accordingly to maintain the desired system pressure.

  • Boosted and consistent water pressure from water storage/cistern systems;
  • Homes - both in private and municipal applications
  • General pressure boosting
  • Sprinkler systems
  • Farming and commercial wash down systems

  • A complete and packaged system: Pump, motor, drive and pressure switch in one box
  • Small and compact design: Fits into small areas, even between floor joists
  • Stainless steel construction: Made for years of operation
  • Simple and easy installation: Step-by-step illustrated instructions
  • Quiet and cool operation: Integrated motor design allows water to flow around it
  • NEMA 4 electronics enclosure
  • Multiple mounting configurations
  • Install units where you need them: horizontal, vertical & even upside down
  • Product power rating: 1.2 hp, 0.9 kW
  • Built in system protections guard the Inline unit from many common failure modes including: surge protection, voltage underload, locked pump, open circuit, short circuit and overheated controller.
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    Min Pressure (PSI):


    Max Pressure (PSI):



    50 Hz

    60 Hz

    Flow Range (GPM):


    Horse Power:




    Relative Humidity:

    0% to 100% (condensing)


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