Grundfos CM 5-75 Booster Switch Pump

CMB 5-75


CMB PT and PS are compact boosters with pressure switches suitable for domestic and agricultural applications and installations where small leakages are expected to occur. CMB PT includes a pressure tank.

Suitable for.

  • Commercial water pressure boosting
  • Attic
  • Bathroom
  • Domestic water pressure boosting


The Grundfos CM PS Booster is an automatic booster system for water supply in domestic and agricultural applications as well as other installations where minor leakages are expected to occur. The booster system consists of a Grundfos CM pump, a five-way valve, and a pressure switch. A pressure tank must be fitted to complete the booster system. Grundfos GT tanks make a perfect fit for your booster system. The pressure band is approximately 1 bar. When the system has been connected to the pipes, it is all a matter of inserting the plug into a power supply socket, and the system is operational.

The Grundfos CM PS Booster is mainly used for agricultural and light commercial water supply and similar water installations where minor leakages can be expected.



Pumped liquid: Water
Liquid temperature range: 0 .. 60 °C
Selected liquid temperature: 20 °C
Density: 998.2 kg/m³



Pump speed on which pump data are based 2900 rpm
Rated flow: 4.7 m³/h
Rated head: 62.4 m
Maximum head 74.6 m
Impellers 8
Code for shaft seal: AVBE
Approvals: CE
Model A
Return valve: YES
Start pressure: 3-12 bar



Pump housing: Stainless
steel, EN 1.430
1, AISI 304
Impeller: Stainless steel, EN 1.4301, AISI 304
Code for rubber EPDM



Max. ambient temperature:
60 °C
Maximum operating pressure:
10 bar
Pipe connection standard:
Type of inlet connection: Rp
Type of outlet connection: R
Size of inlet connection: 11/4
Size of outlet connection: 1



Rated power - P2: 1.3 kW
Mains frequency: 50 Hz
Rated voltage: 1 x 220-240 V
Maximum current consumption: 8.72-8.1
Rated speed: 2710-2760 rpm
Enclosure class (IEC 34-5): IP55
Insulation class (IEC 85): F
Built-in motor protection: TP 211
Length of cable: 1.5 m
Power plug: AU plug



Grundfos CM 5-75 Booster Switch Pump Brochure Grundfos CM 5-75 Booster Switch Pump Brochure