In this water culture plant, Refteco supplied air-evaporators with dual flow for the fish processing rooms, to ensure maximum hygiene and long life. Salmon processing, in addition to being carried out in a typical marine environment, also requires frequent washings of the cooling batteries with paracetic acid-based disinfectants to remove any possible bacteria and fungi. Since the processing is done in an environment where there is a high risk of corrosion, the pipes, keel, fan grids and all the screws were made of stainless steel and the heat exchange batteries were protected by cataphoresis treatment.