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  • CMBasic New
  • Grundfos CMBASIC Pressure Boosting Pump
  • Grundfos CMBASIC Pump Selection Guide
  • Grundfos CMBASIC Pump Performance
  • Grundfos CMBASIC Pump Dimensions

Grundfos Pressure Boosting Pump System - CMBasic

Quick Overview

The Grundfos CMBasic is a compact booster pump designed for domestic and light industrial use. The booster unit consists of a Grundfos CM cast iron pump with stainless steel hydraulic components and PM1 Pressure Manager.


Product Name Price Qty
CMBasic CMB1-36 Pump 0.5kW
CMBasic CMB3-37 Pump 0.5kW
CMBasic CMB5-46 Pump 0.9kW

Availability: In stock


The Grundfos CMBasic is a compact booster pump designed for domestic and light industrial use.

The booster unit consists of a Grundfos CM cast iron pump with stainless steel hydraulic components and PM1 Pressure Manager. The Pressure Manager allows the pump to start and stop automatically according to demand and protects the pump from dry running.


Mains water boosting
Rainwater supply from above ground water tanks
Household water supply
Light industrial use

Features & Benefits:

Robust Design
All moving 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, and alarm indication.

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 CMBasic 1-36) to protect the pump and ensure a long life.

Easy installation
The booster unit is a compact solution, which makes it suitable for most installations. Simply connect the inlet and outlet and you have a fully operational booster unit.

Integrated non-return valve
Non-return valve for backflow prevention.

Pressure Manager Features:

  • Power on indication
  • Pump running indication
  • Alarm indication
  • Dry-running protection
  • Free position in installation
  • Suitable for generator supply
  • Rotary outlet connection
  • Integrated non-return valve
  • Cycling alarm


Operating Conditions:

System pressure: Max. 10 bar
Liquid temperature: 0 °C to +60 °C
Ambient temperature: Max. +55 °C
Relative air humidity: Max. 95 %

Technical Data:

Mains voltage: 1 x 240 V, 50 Hz

Enclosure class: IP55

Insulation class: F

Sound pressure level: 50-60 dBa

Start/stop frequency: Max. 100 per hour
Approvals and markings: CE

Inlet connection size: (CMB1-36 & CMB3-37) 1" Female (CMB5-46) 1 !/4" Female
Outlet connection size: 1" Male


Additional Information