Grundfos CMBE 3-62 Pressure Booster Pump

CMBE 3-62


CMBE is a high-efficiency compact booster suitable for clean water supply and pressure boosting in domestic and light commercial applications. It keeps constant pressure via the integrated speed control.

Suitable for.

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


The Grundfos CMBE booster is a compact booster system for water supply in domestic applications. The integrated speed controller enables the CMBE booster to keep constant pressure in the pipe system. A pressure sensor monitoring changes in the water consumption signals the speed controller to change motor speed to adapt performance to the new state.The CMBE booster is very easy to install. 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 CMBE booster consists of the following:

  • CME pump with integrated frequency converter
  • Five-way valve
  • expansion tank
  • pressure gauge

The Grundfos CMBE booster requires no external motor protection. The MGE motor incorporates thermal protection against slow overloading and blocking (IEC 34.11: TP 211).

The Grundfos CMBE booster is mainly used for domestic and light commercial water supply or booster systems.



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 3780 rpm
Rated flow: 4.2 m³/h
Rated head: 45.2 m
Impellers 4
Code for shaft seal: AVBE
Approvals: CE
Curve tolerance ISO9906:2012 3B
Model A
Return valve: YES
Start pressure: Integrated Frequency converter
Tank volume 21



Pump housing: Stainless steel, DIN W.-Nr. 1.4301
1, AISI 304
Impeller: Stainless steel, DIN W.-Nr. 1.4301, AISI 304
Code for rubber EPDM



Max. ambient temperature:
55 °C
Maximum operating pressure:
10 bar
Pipe connection standard:
Type of inlet connection: Rp
Type of outlet connection: Rp
Size of inlet connection: 1
Size of outlet connection: 1
Pressure rating for connection PN 10



Rated power - P2: 1.1 kW
Mains frequency: 50 Hz
Rated voltage: 1 x 200-240 V
Maximum current consumption: 6.70-5.60 A
Rated speed: 360-4000 rpm
Enclosure class (IEC 34-5): IP55
nsulation class (IEC 85): F
Length of cable: 1.5 m
Power plug: AU plug



Grundfos CMBE 3-62 Pressure Booster Pump Brochure Grundfos CMBE 3-62 Pressure Booster Pump Brochure