Grundfos UP 20-45 N 150 Circulator Pump


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Grundfos UP 20-45 N 150 Circulator Pump

P/N 95906472

The pump is of the canned rotor type, i.e. pump and motor form an integral unit without shaft seal and with only two gaskets for sealing. The bearings are lubricatd by the pumped liquid. The pump is characterized by:

  • Ceramic shaft and radial bearings.
  • Carbon axial bearing.
  • Stainless steel rotor can and bearing plate.
  • Corrosion-resistant impeller, Composite.
  • Stainless steel pump housing.

The motor is a 1-phase motor. No additional motor protection is required. 

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Speed no 1
Rated flow 2.29 m³/h
Rated head 2.94 m
Maximum head 45 dm
TF class 95


Pump housing Stainless steel
EN 1.4301
AISI 304
Impeller Composite
PES+30% GF


Range of ambient temperature 0 .. 40 °C
Amb. max at 80 dgr C liquid 40 °C
Maximum operating pressure 10 bar
Type of connection G
Size of connection 1 1/4 inch
Pressure rating for connection PN 10
Port-to-port length 150 mm


Pumped liquid Water
Liquid temperature range -25 .. 110 °C
Selected liquid temperature 60 °C
Density 983.2 kg/m³

Electrical data

Max. power input 120 W
Mains frequency 50 Hz
Rated voltage 1 x 230 V
Current in speed 3 0.52 A
Capacitor size - run 2.5 µF
Enclosure class (IEC 34-5) X2D
Insulation class (IEC 85) F
Built-in motor protection CONTACT
Thermal protec internal


Terminal box position 9H
Net weight 3.54 kg
Gross weight 3.82 kg
Shipping volume 0.008 m³
Danish VVS No. 380625100
Swedish RSK No. 5803038
Finnish LVI No. 4615608
Norwegian NRF no. 9042213
Country of origin RS
Custom tariff no. 84137090622081967