The VV-RV series.

Reusable adsorbers with valves for indoor & outdoor use

GIEBEL Adsorber® of the VV-RV series are aeration dryers with a reusable cartridge and a valve section. They are suitable for indoor and outdoor use on hydraulic power packs, gearboxes, storage tanks and mobile machinery.

The plastic housing is filled with GIEBEL Xdry®. The desiccant mixture ensures effective drying of the supply air. A 3 μm filter additionally cleans the intake air. When air is forced out of the system, a layer of activated carbon adsorbs escaping oil mist, thus protecting the desiccant and the environment from contamination. When the adsorber is saturated, both desiccant and, if necessary, all other components of the internal system can be replaced at low cost. The sturdy valve section protects the adsorber from unnecessary loading, enables it to be used in extreme, dusty ambient conditions, and ensures minimal pressure build-up even at high air flows.

Downloads.

Mode of operation.


Adsorption - Drying of supply air


  • The level in the system decreases
  • Humid air is sucked in
  • Valves open at approx. 5mbar
  • Uniform flow through the adsorber
  • Air is dried to 2%rH
  • Giebel Xdry® changes color
  • Air is filtered to 3μm


Dry and clean supply air


Desorption - Separation of oil particles


  • The level in the system increases
  • Dry, oily air is squeezed out
  • Activated carbon absorbs oil mist
  • Dry, oil-free air regenerates Giebel Xdry®
  • Giebel Xdry® partially recolors

Self-regeneration and oil-free exhaust air

Technical data.

Pressure ratios.



Spare parts kits.

Videos.