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Pumps
With its high pressures and temperatures, boiler feeding is one of the more demanding tasks for pumps. Grundfos CR are vertical multistage high pressure centrifugal pumps. The in-line design with opposite suction and pressure nozzles of the same nominal size enables space-saving installation in horizontal pipelines and a small installation area. The areas of application for the Grundfos CR pumps are far-reaching, from classic steam boiler operation to complex condensate lifting systems.
GRUNDFOS vertical centrifugal pump CR 5-26 with attached three-phase motor, pump housing made from grey cast iron, impeller made from stainless steel, shaft seal configured as maintenance-free mechanical seal, motor power and main dimensions according to DIN/IEC
Technical data
Nominal flow rate 5.8 m³/h
Nominal head 135.5 m
Size of suction nozzle DN 25/32
Size of pressure connection DN 25/32
Power requirement (P2) of the pump 4 kW
Network frequency 50 Hz
Nominal voltage 3 x 380-415D V
Nominal current 7.9 A
Start-up current 1000-1110%
Net weight 68.6 kg
Gross weight 89.2 kg
e.g. for steam boiler 5000 kg/h-13 bar as feed pump
GRUNDFOS vertical centrifugal pump CR 5-36 with attached three-phase motor, pump housing made from grey cast iron, impeller made from stainless steel, shaft seal configured as maintenance-free mechanical seal, motor power and main dimensions according to DIN/IEC
Technical data
Nominal flow rate 5.8 m³/h
Nominal head 189.2 m
Size of suction nozzle DN 25/32
Size of pressure connection DN 25/32
Power requirement (P2) of the pump 5.5 kW
Network frequency 50 Hz
Nominal voltage 3 x 380-415D V
Nominal current 11 A
Start-up current 1080-1180%
Net weight 84.8 kg
Gross weight 110 kg
e.g. for steam boiler 6000 kg/h-16 bar, 7000 kg/h-13 bar, 8000 kg/h-10 bar as feed pump
GRUNDFOS vertical centrifugal pump CR 5-32 with attached three-phase motor, pump housing made from grey cast iron, impeller made from stainless steel, shaft seal configured as maintenance-free mechanical seal, motor power and main dimensions according to DIN/IEC
Technical data
Nominal flow rate 5.8 m³/h
Nominal head 168.6 m
Size of suction nozzle DN 25/32
Size of pressure connection DN 25/32
Power requirement (P2) of the pump 5,5 kW
Network frequency 50 Hz
Nominal voltage 3 x 380-415D V
Nominal current 11 A
Start-up current 1080-1180%
Net weight 82.6 kg
Gross weight 108 kg
e.g. for steam boiler 5000 kg/h-16 bar, 7000 kg/h-10 bar, 8000 kg/h-10 bar as feed pump
GRUNDFOS vertical centrifugal pump CR 15-14 with attached three-phase motor, pump housing made from grey cast iron, impeller made from stainless steel, shaft seal configured as maintenance-free mechanical seal, motor power and main dimensions according to DIN/IEC
Technical data
Nominal flow rate 17 m³/h
Nominal head 156.9 m
Size of suction nozzle DN 50
Size of pressure connection DN 50
Power requirement (P2) of the pump 11 kW
Network frequency 50 Hz
Nominal voltage 3 x 380-415D/660-690Y V
Nominal current 20.8-19.8/12.0-11.8 A
Start-up current 660-780%
Net weight 157 kg
Gross weight 188 kg
e.g. for steam boiler 10000 kg/h-16 bar as feed pump
GRUNDFOS vertical centrifugal pump CR 10-18 with attached three-phase motor, pump housing made from grey cast iron, impeller made from stainless steel, shaft seal configured as maintenance-free mechanical seal, motor power and main dimensions according to DIN/IEC
Technical data
Nominal flow rate 10 m³/h
Nominal head 149.4 m
Size of suction nozzle DN 40
Size of pressure connection DN 40
Power requirement (P2) of the pump 7.5 kW
Network frequency 50 Hz
Nominal voltage 3 x 380-415D/660-690Y V
Nominal current 14.4-14.0/8.30-8.10 A
Start-up current 780-910%
Net weight 109 kg
Gross weight 131 kg
e.g. for steam boiler 6000 kg/h-18 bar as feed pump
GRUNDFOS vertical centrifugal pump CR 3-23 with attached three-phase motor, pump housing made from grey cast iron, impeller made from stainless steel, shaft seal configured as maintenance-free mechanical seal, motor power and main dimensions according to DIN/IEC
Technical data
Nominal flow rate 3 m³/h
Nominal head 112.8 m
Size of suction nozzle DN 25/32
Size of pressure connection DN 25/32
Power requirement (P2) of the pump 2.2 kW
Network frequency 50 Hz
Nominal voltage 3 x 380-415D V
Nominal current 4.45 A
Start-up current 850-950%
Net weight 47 kg
Gross weight 49.9 kg
e.g. for steam boiler 1250 kg/h-13 bar as feed pump
GRUNDFOS vertical centrifugal pump CR 5-29 with attached three-phase motor, pump housing made from grey cast iron, impeller made from stainless steel, shaft seal configured as maintenance-free mechanical seal, motor power and main dimensions according to DIN/IEC
Technical data
Nominal flow rate 5.8 m³/h
Nominal head 150.4 m
Size of suction nozzle DN 25/32
Size of pressure connection DN 25/32
Power requirement (P2) of the pump 4 kW
Network frequency 50 Hz
Nominal voltage 3 x 380-415D V
Nominal current 7.9 A
Start-up current 1000-1110%
Net weight 70.4 kg
Gross weight 91 kg
e.g. for steam boiler 4000 kg/h-16 bar, 6000 kg/h-13 bar as feed pump
GRUNDFOS vertical centrifugal pump CR 10-22 with attached three-phase motor, pump housing made from grey cast iron, impeller made from stainless steel, shaft seal configured as maintenance-free mechanical seal, motor power and main dimensions according to DIN/IEC
Technical data
Nominal flow rate 10 m³/h
Nominal head 180.6 m
Size of suction nozzle DN 40
Size of pressure connection DN 40
Power requirement (P2) of the pump 7.5 kW
Network frequency 50 Hz
Nominal voltage 3 x 380-415D/660-690Y V
Nominal current 14.4-14.0/8.30-8.10 A
Start-up current 780-910%
Net weight 114 kg
Gross weight 138 kg
e.g. for steam boiler 10000 kg/h-16 bar as feed pump
GRUNDFOS vertical centrifugal pump CR 15-12 with attached three-phase motor, pump housing made from grey cast iron, impeller made from stainless steel, shaft seal configured as maintenance-free mechanical seal, motor power and main dimensions according to DIN/IEC
Technical data
Nominal flow rate 17 m³/h
Nominal head 135.6 m
Size of suction nozzle DN 50
Size of pressure connection DN 50
Power requirement (P2) of the pump 11 kW
Network frequency 50 Hz
Nominal voltage 3 x 380-415D/660-690Y V
Nominal current 20.8-19.8/12.0-11.8 A
Start-up current 660-780%
Net weight 153 kg
Gross weight 181 kg
e.g. for steam boiler 12000 kg/h-13 bar, 10000 kg/h-13 bar as feed pump
GRUNDFOS vertical centrifugal pump CR 5-24 with attached three-phase motor, pump housing made from grey cast iron, impeller made from stainless steel, shaft seal configured as maintenance-free mechanical seal, motor power and main dimensions according to DIN/IEC
Technical data
Nominal flow rate 5.8 m³/h
Nominal head 125.5 m
Size of suction nozzle DN 25/32
Size of pressure connection DN 25/32
Power requirement (P2) of the pump 4 kW
Network frequency 50 Hz
Nominal voltage 3 x 380-415D V
Nominal current 7.9 A
Start-up current 1000-1110%
Net weight 67.4 kg
Gross weight 72.1 kg
e.g. for steam boiler 4000 kg/h-13 bar as feed pump
GRUNDFOS vertical centrifugal pump CR 5-22 with attached three-phase motor, pump housing made from grey cast iron, impeller made from stainless steel, shaft seal configured as maintenance-free mechanical seal, motor power and main dimensions according to DIN/IEC
Technical data
Nominal flow rate 5.8 m³/h
Nominal head 115.3 m
Size of suction nozzle DN 25/32
Size of pressure connection DN 25/32
Power requirement (P2) of the pump 4 kW
Network frequency 50 Hz
Nominal voltage 3 x 380-415D V
Nominal current 7.9 A
Start-up current 1000-1110%
Net weight 66.3 kg
Gross weight 70.9 kg
e.g. for steam boiler 3000 kg/h-13 bar, 5000 kg/h-10 bar, 6000 kg/h-10 bar as feed pump
GRUNDFOS vertical centrifugal pump CR 3-4 with attached three-phase motor, pump housing made from grey cast iron, impeller made from stainless steel, shaft seal configured as maintenance-free mechanical seal, motor power and main dimensions according to DIN/IEC
Technical data
Nominal flow rate 3 m³/h
Nominal head 19.1 m
Size of suction nozzle DN 25/32
Size of pressure connection DN 25/32
Power requirement (P2) of the pump 0.37 kW
Network frequency 50 Hz
Nominal voltage 3 x 220-240D/380-415Y V
Nominal current 1.74/1.00 A
Start-up current 490-530%
Net weight 23.5 kg
Gross weight 26.1 kg
e.g. for condensate lifting systems
GRUNDFOS vertical centrifugal pump CR 3-21 with attached three-phase motor, pump housing made from grey cast iron, impeller made from stainless steel, shaft seal configured as maintenance-free mechanical seal, motor power and main dimensions according to DIN/IEC
Technical data
Nominal flow rate 3 m³/h
Nominal head 103.6 m
Size of suction nozzle DN 25/32
Size of pressure connection DN 25/32
Power requirement (P2) of the pump 2.2 kW
Network frequency 50 Hz
Nominal voltage 3 x 380-415D V
Nominal current 4.45 A
Start-up current 850-950%
Net weight 46.2 kg
Gross weight 49.1 kg
e.g. for steam boiler 2000 kg/h-10 bar as feed pump
GRUNDFOS vertical centrifugal pump CR 3-25 with attached three-phase motor, pump housing made from grey cast iron, impeller made from stainless steel, shaft seal configured as maintenance-free mechanical seal, motor power and main dimensions according to DIN/IEC
Technical data
Nominal flow rate 3 m³/h
Nominal head 122 m
Size of suction nozzle DN 25/32
Size of pressure connection DN 25/32
Power requirement (P2) of the pump 2.2 kW
Network frequency 50 Hz
Nominal voltage 3 x 380-415D V
Nominal current 4.45 A
Start-up current 850-950%
Net weight 47.9 kg
Gross weight 50.8 kg
e.g. for steam boiler 2000 kg/h-13 bar as feed pump
GRUNDFOS vertical centrifugal pump CR 3-31 with attached three-phase motor, pump housing made from grey cast iron, impeller made from stainless steel, shaft seal configured as maintenance-free mechanical seal, motor power and main dimensions according to DIN/IEC
Technical data
Nominal flow rate 3 m³/h
Nominal head 153.2 m
Size of suction nozzle DN 25/32
Size of pressure connection DN 25/32
Power requirement (P2) of the pump 3 kW
Network frequency 50 Hz
Nominal voltage 3 x 380-415D V
Nominal current 6.3 A
Start-up current 840-920%
Net weight 54.5 kg
Gross weight 59.8 kg
e.g. for steam boiler 2000 kg/h-16 bar as feed pump
GRUNDFOS vertical centrifugal pump CR 3-36 with attached three-phase motor, pump housing made from grey cast iron, impeller made from stainless steel, shaft seal configured as maintenance-free mechanical seal, motor power and main dimensions according to DIN/IEC
Technical data
Nominal flow rate 3 m³/h
Nominal head 176.3 m
Size of suction nozzle DN 25/32
Size of pressure connection DN 25/2532
Power requirement (P2) of the pump 3 kW
Network frequency 50 Hz
Nominal voltage 3 x 380-415D V
Nominal current 6.3 A
Start-up current 840-920%
Net weight 56.5 kg
Gross weight 61.2 kg
e.g. for steam boiler 3000 kg/h-16 bar as feed pump
GRUNDFOS vertical centrifugal pump CR 5-4 with attached three-phase motor, pump housing made from grey cast iron, impeller made from stainless steel, shaft seal configured as maintenance-free mechanical seal, motor power and main dimensions according to DIN/IEC
Technical data
Nominal flow rate 6.9 m³/h
Nominal head 26.2 m
Size of suction nozzle DN 25/32
Size of pressure connection DN 25/32
Power requirement (P2) of the pump 1.1 kW
Network frequency 50 Hz
Nominal voltage 3 x 220-240D/380-415Y V
Nominal current 1.74/1.00 A
Start-up current 490-530%
Net weight 28.4 kg
Gross weight 31.3 kg
e.g. for large condensate lifting systems
