The Colasit CAVW exhaust air pre-scrubber with a vertical design cleans acidic and alkaline contamination from contaminated process air up to a volume of 200 m³/h contaminated exhaust air.

CAVW exhaust air pre-scrubber made of plastic for tanks, storage tank systems to pre-clean flue gases - Colasit



The Colasit pre-washer is used in tanks or storage tank systems to clean tank exhaust air that can occur during storage procedures or due to temperature or pressure fluctuations. This affects

  • The food industry
  • The pharmaceutical, chemical or biochemical industry
  • Semiconductor, solar and surface technology
  • Wastewater and waste recycling plants
  • Composting
  • Drying processes


Type 125

Volume flow:
min. 40 m3/h to max. 100 m3/h
approx. 4 l/min at 4 bar
Pressure loss:
approx. 300 Pa at 40 m3/h

Type 200

Volume flow:
min. 100 m3/h to max. 200 m3/h
approx. 10 l/min at 4 bar
Pressure loss:
approx. 400 Pa at 100 m3/h


Made of non-corrosive PVC plastics. Packaging materials ensure sufficient boundary surface area between the gas and fluid phase. 

Ex Protection

EX Logo

Version available in ATEX zones 1 + 2