Grundfos CMB-SP3-28 Automatic Self-Priming Water Pump

Grundfos CMB-SP3-28 Self Priming Water Pump

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The GRUNDFOS CM Booster Self-Priming Pump is designed for boosting your water pressure or delivering rain water into your home from your water tanks. The CM Booster Self-Priming Pump includes the GRUNDFOS Pressure Manager fitted as standard to deliver perfect control and ongoing protection of the pump.

SELF-PRIMING: Designed to have excellent suction lift capabilities, the CM Booster Self-Priming Pump is able to lift water up to 4 metres vertically below the level of the pump, making this perfect for pumping water from below ground tanks or shallow wells.

PRESSURE MANAGER: The Pressure Manager (PM) controller automatically stops and starts the pump in line with household demand. In addition, the device prevents the pump from continuing to run if the water source runs dry and provides a cycling alarm, preventing the pump from rapidly turning on and off when there is a leaking pipe or dripping tap.


  • Voltage: 220-240V, 50Hz
  • Current Consumption: 2-8-3.1A
  • Rated Speed: 2730-2740rpm
  • Pressure: 1-1.5bar
  • Flow Rate: 60L/min Max
  • Pump Noise: 55dB Max
  • Inlet Connections 1" Female
  • Outlet Connection: 1" Male
  • Dimensions: W158 x H317 x D377mm
  • Weight: 13.8Kg


  • Compact
  • Easy Installation
  • Self Priming up to 4m
  • Automatic Resetting of Alarms
  • Dry Running Protection
  • Anti-Cycling (Leak Detection)
  • Non-Return Valve

2 Year Warranty

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