Case Study:

Clean Side Removal Cartridges improved dust release & prolonged life cycle




Cement Silo

Dust type:

Cement dust


  • In 2010 the customer installed Nordic Air Filtration’s Clean Side Removal CKD230 cartridges in his Donaldson Siloair unit, which is situated on the roof of the cement silo.


  • After replacing the original Donaldson cartridges with Nordic Air Filtration’s CKD230, the customer has experienced a longer life cycle of the filters.
  • The cartridges are equipped with NA-909FC filter media which is one of Nordic Air Filtration’s superior polyester medias with PTFE coating. The PTFE coating ensures optimal dedusting and is the optimal solution for concrete dust.

End User’s main areas of business

  • Prefabricated concrete
  • AAC - Aerated Autoclaved Concrete


  CKD230 in Donaldson Siloair Unit
Airflow in unit  1500 m3/hour
Dusttype  Cement
Temperature in unit 80
Actual dust load
52 m3/m2/hour
Filter model Clean Side Removal Cartridge CKD230
Filter Media type  Polyester with PTFE coating
Number of cartridges  8
Amount of filter media in unit 28,8m²


  • Longer filter life cycle
  • PTFE-coating for better dust release under humid conditions

Solution after: