scroll vacuum pump applications advantages: - oil free - discharging against atmospheric pressure disadvantages: - - suction capacity: m³/h ultimate vacuum: mbar How it works: A scroll compressor, also known as scroll pump and scroll vacuum pump, uses two interleaved archimedean spiral-shaped scrolls to pump or compress liquids or gases. One of the scrolls is fixed, while the other orbits eccentrically without rotating, thereby trapping and compressing pockets of fluid between the scrolls..    more in Wikipedia Anest Iwata Scroll pump

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