Water Systems

Inline Constant Pressure System

Item Number: Inline CP - 90411101

Model Number: 25LGIL1100N4

The Inline CP Constant Pressure System provides constant pressure for both private wells and municipal water systems.


  • A complete and packaged system (Pump, motor, drive and pressure sensor 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 (IP56) electronics enclosure
  • Multiple mounting configurations - Install units where you need them: horizontal, vertical and even upside down
  • Product power rating: 1.2 hp, 0.9 kW
  • Shipping weight: 50 lbs, 22.7 kg
  • 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.


  • Boosted and constant 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
Main Image
Model DescriptionOrder No.Input VoltageInput Phase
25LGIL1100N4 (1) 90411101230Single
Drive Assembly305707907230Single
Pump Motor Assembly305707902230Single
Mounting Feet305707903--
Pressure Sensor305707906--
Pressure Tank (2-gallon)14942302--
Fastener Kit305707904--
Pressure Sensor Cable305707905--
Overpressure Sensor (2)305707909--
Overpressure Sensor Cable (2)305707908--
(1) Includes pump, motor, drive, pressure sensor, and all cables. (2) Overpressure sensor is sold as an accessory and is not required for normal operation. (3) BSP threads
Cut-Away View
Typical Installation