Grundfos Basicline CMB 3-37 (97530133) Pressure Boosting Rain Water Tank Pump 40m & 70L/m

Brand Grundfos
Model CMB3-37
Availability Out of Stock
General information


The Grundfos CMB3-37 is the direct replacement for the CH2-50PC and CMB3-4


The Grundfos CM Basic is a compact  pump designed for domestic and light industrial use. The booster unit consists of a robust multistage centrifugal pump and a generator friendly PM pressure manager. The pressure manager allows the pump to start and stop automatically according to demand and protects the pump from dry running. The CM Basic 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 consists of these components
  • Quiet operation
  • Compact design
  • Robust construction
  • Dry run protection
  • Easy installation
  • Generator friendly
  • All wetted parts stainless steel with cast iron clamp
  • Robust, stainless steel construction
  • Compact design
  • Easy installation
  • Hard wearing carbon / ceramic seal
  • IP55 Motor
  • Complies with AS/NZS 4020 - testing for products for use with drinking water


Pump Curve




Documents below are available for download

 Grundfos CMB3-37 Basic Pump 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
    CI/304 SS
  • Rated flow
    3.1 m³/h
  • Head up to
    40 m
  • Warranty
    2 Years
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