Grundfos® CM, CME Multistage Centrifugal Pumps
The CM abbreviation derives
from the most basic description of the pump:
Centrifugal Modular. The pump is basically composed of a series of interchangeable modules, all of which have been designed to work together seamlessly, in any application. The CM pump is primarily used as a build-in pump in OEM solutions. Its compactness and flexibility make it an optimal solution for installation and interaction with other components in a larger product. It can also be used as a system pump, connected in complete system solutions, or as a stand-alone pump.
 Flexibility
While each Grundfos CM pump is individually created, the pump family is designed to be used in a variety of applications, including:
Washing & cleaning
Degreasing and washing of production equipment
Washing machines
Temperature control
Electronic data processing
Heating and cooling in industrial processes
Water treatment
Reverse osmosis
Ultra-filtration systems
Chemical and Pharmaceutical industries
Distilling systems
Dosing / mixing
Building Services
Water circulation / pressure boosting
Chillers
Irrigation
Agriculture and horticulture
General water service
Materials:
Different materials are better suited for different applications.
The modular concept of the Grundfos CM pump
allows you to select the material that best suits your needs.
Cast iron (type A)
Solid & reliable, it is perfect for washing and cleaning, pressure boosting, and chillers.
AISI 304/DIN 1.4301 stainless steel (type I)
The perfect choice for water and non-corrosive liquids used in water treatment, temperature control, pressure boosting, and washing & cleaning.
AISI 316/DIN 1.4401 stainless steel (type G)
Offers a high degree of corrosion protection against aggressive liquids used in chemical, pharmaceutical, food & beverage and water treatment applications.
Reliability
The Grundfos CM has high reliability; built-in. Clamping of the pump’s impellers has been greatly improved by implementing a new stop ring to form a well-defined base. Combining this feature with a Nordlock© washer at the other end of the pump stack creates a robust and reliable design. What’s more, industry-wide problems with sticking of shaft seals where SIC-SIC seal faces are used have been eliminated. The new CM solution builds on both the implementation of a rotation stop on the stationary ring and the presence of different surface finishing on the stationary and the rotating ring.
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