Ecodesign Directive 2009/125/EC


The Ecodesign Directive 2009/125/EC serves to create a framework for defining ecodesign requirements for energy-related  roducts, or ErP. It replaces Directive 2005/32/EC of July 6, 2005, also known as the Energy-using Products (EuP) directive.

Through these directives, numerous energy-related products were investigated and minimum requirements were defined. Among other things, on June 25, 2012 EU Regulation No. 547/2012 was published. It contains the requirements for the ecodesign of clean-water centrifugal pumps and is intended to facilitate implementation of Directive 2009/125/EC.

What is the objective of this Regulation?


Large quantities of water pumps are entering the market in the European Union and represent an ecologically significant  onsumption of energy. The EU wishes to take appropriate steps that will limit this energy consumption and consequently also CO2 emissions. Implementation of this directive will eliminate the commercial availability of water pumps with poor efficiency.

Which ALLWEILER pumps are affected?


The following series of water pumps fall under EU Regulation No. 547/2012:


NT, NS       (water pump, end suction own bearing; ESOB)

NB              (water pump, end suction close coupled; ESCC)

NI, NISM   (water pump, end suction close coupled inline; ESCCi)

LV               (water pump, vertical multi-stage; MS-V)


Exceptions are pump sizes with a shaft output greater than 150 kW and pumps having a nominal flow rate of less than 6m³ / h (Article 2, Paragraph 2).

On what date will Regulation No. 547/2012 become mandatory?


· First stage mandatory starting on January 1, 2013 

· Second stage mandatory starting on January 1, 2015


What are the requirements for centrifugal water pumps?


Beginning on the dates listed above, the pumps must fulfill minimum efficiency requirements with the full impeller diameter at the Best Efficiency Point (BEP), partialload, and overload conditions. The dimensionless variable "Minimum Efficiency Index"

(MEI) was introduced to enable straightforward identification and comparisons of hydraulic pump efficiency. It is based on operating points at the Best Efficiency Point (BEP), at partial load (capacity 75% of BEP), and at overload (capacity 110% of BEP) and is applicable to the full impeller diameter.


The pumps must exhibit  MEI ≥ 0.40 by January 1, 2015


Additional information