Grundfos CMB-SP 3-37 Booster Self-Priming Pump

Brand Grundfos
Model CMB-SP 3-37
Availability Out of Stock
General information


The Grundfos CM Booster Self Priming is a compact booster pump designed for domestic and light industrial use. The booster unit consists of a robust multistage centrifugal pump a generator friendly PM pressure manager controller. The pressure manager allows the pump to start and stop automatically according to demand and protects the pump from dry running. The CM Booster Self Priming is the perfect solution if you are struggling with insufficient mains pressure, and can also be used with above or below ground water sources.

The CMB-SP3-37 replaces the older CH2-50PC and CMB3-4 Models


Features :


With a suction lift of up to 8 metres (self-priming up to 4 metres), the CM Booster Self-Priming is ideal for pressurising water from above or below ground water sources.

Robust design 

All wetted parts are made from high quality, corrosion resistant stainless steel to ensure the longest life possible.

User-friendly interface

The pump features a user-friendly interface with LED indicators displaying power status, pump running, alarm indication and pressure indication (excluding CMB-SP 1-36).

Protective features

The pump incorporates a range of protective features such as; dry run protection, thermal overload protection, cycling alarm and maximum continuous operation time - 30 mins (excluding CMB-SP 1-36) to protect the pump and ensure a long life.

Easy installation

The booster unit is a compact and adaptable solution, which makes it suitable for most installations. Simply connect the inlet and outlet and adjust the start pressure to suit individual requirements and you have a fully operational booster unit.

Integrated non-return valve

Non-return valve for backflow prevention.


Recommened Applications :

  • Mains Boosting
  • Household Water Supply
  • Boosting from above ground water tanks
  • Boosting from below ground water sources (tank, dam)
  • Light Inductrial Use


Documents below are available for download

 Grundfos CMB-SP 3-37 Data Sheet / Curve / Dimensions

 Grundfos CM Booster Brochure

Spec & Features
  • Features and technical specification of the product. Please contact us for further information and specifics.
  • Part No.
  • Power
    0.5 kW
  • Inlet
    1” F
  • Outlet
    1” M
  • Controller
  • Wetted Parts Construction
    304 SS
  • Self-Priming
  • Rated flow
    3 m³/h
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