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CM Booster Series

The Grundfos CM Booster is a horizontal multistage centrifugal pump designed for domestic and light industrial applications. It is suitable for pressure boosting from above ground rainwater tanks or from mains water.

The Grundfos CM Booster with Pressure Manager is a compact booster pump for water supply in domestic applications. The Pressure Manager allows the pump to start and stop automatically according to demand and protects the pump from dry running. Coupled with Pressure Manager, the CM Booster provides reliable pressure boosting and water supply while minimising annoying shower temperature fluctuations

The CM Booster is very easy to install. When the booster has been connected to the pipework, it is all a matter of plugging the socket.

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CM Booster Series
  • Features
  • Applications
  • Curves
  • Tech Specs
  • Dimensions
  • Downloads
  • Compact
  • Easy installation
  • Robust construction
  • Generator friendly
  • Dry-running protection
  • Anti cycling (leakage detection)

NOTE: Product information should be used as a guide only and should not be used for pump selection. For further information, please contact Malcolm Thompson Pumps on 1800 355 606.

Pressure Boosting for domestic and light industrial applications.

Model p2 (kW) 1phln (a) Water temp Connection size Inlet (a2) Connection size Outlet (a1) Control Weight (kg) CH equivalent
CMB 1-4 0.5 3.1 0/40°C 1”f 1”M PM1 13.8 CH2-30PC
CMB 3-3 0.5 3.1 0/40°C 1”f 1”M PM2 13.6 CH2-40PC
CMB 3-4 0.5 3.1 0/40°C 1”f 1”M PM2 14 CH2-50PC
CMB 3-5 0.5 3.1 0/40°C 1”f 1”M PM2 14.4 CH2-60PC
CMB 3-6 0.67 4.4 0/40°C 1”f 1”M PM2 16.34 CH2-60PC
CMB 5-3 0.5 3.1 0/40°C 1¼”f 1”M PM2 13.6 CH4-40PC
CMB 5-4 0.67 4.4 0/40°C 1¼”f 1”M PM2 15.3 CH4-50PC
CMB 5-5 0.9 5.4 0/40°C 1¼”f 1”M PM2 16.8 CH4-60PC

Model Number L1 L2 (centre of pm to outlet) H2 H1 B2 (bolt hole centres)
CMB 1-4 323 89.5 317 75 125
CMB 3-3 5.5 71.5 317 75 125
CMB 3-4 323 89.5 317 75 125
CMB 3-5 341 107.5 317 75 125
CMB 3-6 417 143.5 317 75 125
CMB 5-3 305 71.5 317 75 125
CMB 5-4 363 89.5 317 75 125
CMB 5-5 381 107.5 317 75 125