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Electronic circulator pump Grundfos ALPHA2 25-40 N 180 mm (99411365)

Electronic circulator pump Grundfos ALPHA2 25-40 N 180 mm (99411365)

  • Product code: 99411365
  • EAN : 5713828678720
  • Manufacturer code: 99411365
  • Warranty: 2 years

Electronic circulator pump Grundfos ALPHA2 25-40. For use in heating systems. More information

  • Availability

    GLS delivery 3-4 working days. DHL express delivery 1-2 working days.

  • More than 5 pcs in stock  
List price € 936,54
Price without VAT € 410,22
Price with VAT 21 % € 496,37

Would you like to get a price offer? Contact us

Parameters and catalogs

Connection pump size 1 1/2"
Connection type Male thread
Fluid temperature 110 °C
Head max 4 m
Material Stainless steel
Port-to-port lenght 180 mm
Power 230 VAC
Pressure 10 bar
Pump flow 2,4 m3/h
Pump lightness DN 25
Weight 2.27 kg

Datasheet download

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CATALOG download

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GRUNDFOS ALPHA2 is a new generation of small circulator pumps in the highest energy class "A". The ALPHA2 circulator pump is the youngest and most innovative member of the Grundfos high-quality family. The use of these pumps is for the circulation of water in heating and hot water systems.

The circulator pump complies with the EuP directive.

Power range

AUTOADAPT function

In the case of the ALPHA2, there is no need for complicated pump setting and adjustment. If you leave the factory setting for AUTOADAPT, the pump will automatically analyze the heating system, find the optimum setting and adapt to the heat demand and changes. For a more detailed description of the AUTOADAPT function, see the enclosed datasheet. AUTOADAPT can be deactivated by selecting another mode (proportional or constant pressure or classic three speed operation).


  • Single or double pipe systems with radiators.
  • Floor heating.
  • Heating systems with variable flow controlled by thermostatic valves.
  • Constant flow heating systems without thermostatic valves.
  • Systems with variable flow temperature.
  • Systems requiring reduced night-time operation.

Pump features

  • Power supply 230 V.
  • Max. operating pressure 10 bar.
  • Construction length 180 mm.
  • Three modes of proportional pressure or constant pressure.
  • Can be operated as a classic three-speed pump.
  • Low power consumption (class A).
  • Night reduced function.
  • Low noise.
  • Current consumption indicator energy.
  • Power supply connection via ALPHA push-in connector.

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