Product Details


The GRUNDFOS CR pump range are of vertical multistage in-line centrifugal design suitable for a wide range of water supply, irrigation, liquid transfer and boosting applications. The pumps are of heavy duty construction and are designed for continuous duty in commercial and industrial installations. All vital components including the impellers, intermediate chambers and shaft are made from stainless steel and the top and bottom housings from cast iron. The pump is water lubricated and is provided with a tungsten carbide faced mechanical shaft seal.

For aggressive liquids the ‘N’ version is available which features stainless steel top and bottom pump housings.


The pumps are coupled to a high efficiency ‘Blue flux’ totally enclosed fan cooled 2-pole GRUNDFOS motors complying with IEC and DIN standards. All motors mut be connected to an effective motor starter in accordance with local regulations.


Enclosure Class: IP55

Insulation Class: F

Speed: 2900rpm

Voltage: 3 x 380/415V



Pumped liquids: Thin, clean, non-aggressive and non-explosive liquids without solid particles or fibres.
Liquid Temperature Range: -200C to +1200C
Max Ambient Temperature: +600C
Max Suction Lift: According to the NPSH curve plus a safety margin of 1m.
Max Operating Pressure:  25 Bar


Model Motor Full Load Current (A) Dimensions (mm) Weight (kg)
kW HP B1 B1 + B2 D1 D2
CR 5-10* 1.5 2 3.2 517 798 178 110 39
CR 5-16* 2.2 3 4.5 679 1000 178 110 43
CR 5-20* 3 4 6.3 791 1126 198 120 50
CR 5-29** 4 5.5 8 1034 1406 220 134 66
CR 5-36** 5.5 7.5 11.2 1253 1644 220 134 84

* with Oval flanges

** with DIN flanges


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