The STAUFFMini Water Vacpurifies hydraulic system oil, eliminating water, gas and particulate matter. The purified oil satisfies the most stringent quality requirements. The STAUFFMini Water Vac dehydrates and cleans most types of oils such as lubricating, hydraulic, transformer and switch oils while it neither removes nor alters oil additives. The water removal process is based on pure vacuum evaporation inside a vacuum chamber at a maximum temperature of +65 °C / +149 °F. Solid particle removal is achieved through a field-proven STAUFF Systems Micro Filter.