Efficient air breathers for hydraulic tanks
10. February 2025
BFSK ventilation and air breathers from Hengst Filtration

Dessicant air breathers play a key role in preventing moisture and dirt from entering hydraulic tanks. Hengst Filtration’s BFSK filters prevent moist air from entering, which extends the service life of hydraulic fluids and reduces the formation of deposits. Optionally available check valves also minimize air exchange during idle operation and extend the service life of the drying granules.
IMPORTANT FEATURES
- Highly effective filter material for fine dust
 - Water-adsorbing granules to reduce moisture
 - Replaceable filter cartridges and refill packs
 - Optional check valves to extend the life of the granules
 - Optical contamination indicator (optional)
 
Areas of application and advantages
The filters are used in hydraulic systems, aviation, wind energy and the petrochemical industry. Through effective air drying and filtration, they protect lubricants from quality losses and extend the service life of hydraulic and transmission components.
Increased efficiency in wind power
In wind turbines, BFSK filters ensure oil quality and reduce wear. They prevent moisture ingress, reduce maintenance costs and ensure more sustainable electricity production.
With this technology, Hengst Filtration contributes to more efficient, longer-lasting and more economical use of hydraulic and transmission systems.
Find out more about our innovative solutions and take a look at our new FILCOM online shop!
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