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The HeptaDry line of dry pumps is suited for low- and medium-vacuum applications, for all areas in which oil-free vacuum is required. Rugged and dependable, they offer pumping speeds of from 100 to 600 m3/h. They are suitable as stand-alone pumps for processes of up to 10-1 mbar. When used in combination with Roots pumps, they supply an ultimate pressure of up to 5 x 10-3 mbar, this enables them to be used throughout a broad range of pressures. They offer coated, single-piece, variable-pitch rotors. The internal compression makes for low energy consumption and the design and slow speed of the pumps is gentler to bearingsand seals.
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