AEET Energy Group GmbH

Your Wholesaler for Europe


+49 (0) 5382 - 955 979 - 0

Bild 01

Safe heating water to standard

Bild 02

Efficient heat transfer

Bild 03

No minerals - no scaling

Save with Purotap Compenso

As in closed heating systems actually no corrosion can occur, non-professionals are baffled with the question as to why did it come to serious damage due to corrosion. Benefiting from a high amount of salts in normal tap water, the formation of galvanic elements is promoted that ultimately cause this corrosion. But also in the unfiltered water containing chlorides, sulfates and nitrates have their share of such decay processes.

To counteract such processes permanently, to prolong the lifetime of an expensive and high-quality heating system, and to save you costly repairs the proven Purotap system offers an attractively priced solution. Since only on consumption, the resin must be refilled arise the costs in the long run less than by the exchange of entire cartridges.

PUROTAP ® compenso

The Purotap compenso system made possible by its ease of use and the optimum overview during the softening and demineralization. Thanks to its good operation, it is suitable not only for professionals but also for the homeowner.

PUROTAP ® compenso & data sheets

Quick contact

Do you have questions about our products? We are available by email or telephone.
Or get in touch with us.

AEET Energy Group GmbH
Schwarzer Weg 5
D-37581 Bad Gandersheim

Telephone: 05382 - 955 979 - 0
Telefax: 05382 - 955 979 - 9


PUROTAP ® compenso

To guarantee a long life span for modern heating systems, all manufacturers give comprehensive tips and directives. These suggest demineralizing the filling water for every heating system. A reason for it are experiences from the practice, which underpin that already minimum steps of hardness in the filling water lead to damages in high-quality devices like gas-fired hot-water tank, warm pumps and solar arrangements. One of the most frequent causes is the amount of lime in the filling water. Using the example of a detached house with a heating system of 350 liters system water content results in average amount of 100g lime in the filling. Although this amount may seem small, it is able to damage by lime precipitation the built heating system permanently. The amount of lime increases, of course, with the amount of the used filling water. In addition, it varies from region to region due to the different degrees of hardness of the tap water.

Counteract corrosion from the beginning

Also damaging for sensitive devices such as heating baths is the penetration of the filling water with salts. Therefore, it comes to corrosion of the lines within the heating system. Electrochemical reactions have a harmful effect on the metallic parts of the system and accelerate the wear process. Benefiting from a high amount of salts the formation of galvanic elements is promoted that ultimately cause this corrosion. It also contained in the unfiltered water, chlorides, sulphates and nitrates have their not insignificant proportion.

It is true that, at simple softened water, calcium and magnesium ions exchanged for sodium ions, thus removed from the water hardness, and significantly lowered the hardness grades, but the salinity of the water remains unchanged. In case of modern systems, an important damage factor remains completely unchanged.

The Purotap compenso offers for heating engineers and maintenance services not only sustainable and fixed solution for demineralization of water, but also captivates more by its user-friendliness and high quality workmanship. Equipped with a precise measuring computer, it is simple, to obtain accurate information about the status of water, the salt content and the degree of hardness. New resin can easily be topped up, dispose the used resin in household waste. The integrated flow meter displays the output per liter and ascertained the already treated water quantity in the heating system. The power supply takes place entirely using conventional batteries. Within the scope of DIN EN 1717 can be interposed easily a system separator.

The lance of Purotap compenso is made of long-lasting stainless steel and chrome steel. The filling speed is maximum 1500 liters per hour, filling capacity amounts to up to 2000 liters with average 20° German hardness in combination with Purotap Compenso 25.

Data sheet Purotap Compenso

Annual need:

  • Compenso 2: < 250 litres
  • Compenso 12: < 2500 litres
  • Compenso 25: < 5.000 litres
  • Compenso 50: < 10.000 litres

Capacity with 1°dH:

  • Compenso 2: 2,5 m³
  • Compenso 12: 20 m³
  • Compenso 25: 40 m³
  • Compenso 50: 80 m³

Capacity with 1° fH:

  • Compenso 2: 4,5 m³
  • Compenso 12: 35 m³
  • Compenso 25: 70 m³
  • Compenso 50: 140 m³

Bulk power:

  • Compenso 2: 2,5 litres/minutes
  • Compenso 12: 10 litres/minutes
  • Compenso 25: 20 litres/minutes
  • Compenso 50: 20 litres/minutes
  • Working pressure: Compenso 2 / 12 / 25 / 50: < 4,5 bar
  • Maximum operating temperature: Compenso 2 / 12 / 25 / 50: 60° Celsius


  • Compenso 2: 46 cm
  • Compenso 12: 70 cm
  • Compenso 25: 115 cm
  • Compenso 50: 142 cm

Installation length:

  • Compenso 2: 45 cm
  • Compenso 12 / 25 / 50: 80 cm

Weight (blank):

  • Compenso 2: 5 kg
  • Compenso 12: 7,5 kg
  • Compenso 25: 15 kg
  • Compenso 50: 18 kg

Resinous filling:

  • Compenso 2: 1,75 litres
  • Compenso 12: 12,5 litres
  • Compenso 25: 25 litres
  • Compenso 50: 50 litres

All advantages of the Purotap compenso filling system are obvious

With the Purotap Profi system for refilling heating water according to VDI 2035 Elysator fills a real gap in service. In contrast to the usual demineralization cartridges, the complete demineralization can be controlled through a specially designed and battery-powered measuring counter. The high-quality filling cartridge is made of chrome steel, sturdy and suitable for everyday use.

The mobile filling station Purotap Profi fulfil latest requirements and quality standards. Including the Association of German Engineers (VDI) standard norm 2035, which states: "With decreasing water salinity increasing amounts of oxygen can be tolerated. In the absence of ions that can take over the transport of electric current in the water, is the formation of galvanic cells, which may lead to localized corrosion, virtually impossible. (…) For initial filling larger water heating installations using demineralized water is recommended." However, the DIN 50930 of the German Institute for Standardization e. V. (DIN) paid full attention in developing the Purotap systems. According to this chloride and sulfate ions stimulate the anodic partial reaction of metal dissolution. By selective anion exchange the probability of local corrosion can be reduced.

Another fulfilled standard are the provisions of the Swiss Association of Heating and Air engineers (SKWI). The Swiss standard requires: "The filling and make-up water must be desalinated." On top of that are the SKWI states that "the best technical solution is demineralization in waters with high chloride or sulfate content".

Within the scope of DIN EN 1717 can be interposed easily a system separator.