Stokes 6” series mechanical boosters are designed to be used in conjunction with rotary piston, dry vacuum, rotary vane, liquid ring or on the inlet of the backing pump to create a compact integrated package to increase pumping speed at working pressures and reduce the pump down time significantly. The 6” Series are available in bare-shaft or direct drive motor variants, horizontal or vertical gas flow and with a single mechanical seal or a Process Isolation variant with 5 mechanical seals for optimum protection from dust and particulate contamination in arduous applications. Stokes 6” series mechanical boosters can get peak pumping speed from 1589 m3h-1 to 4420 m3h-1 and max pressure differential from 506 mbar to 333 mbar.


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STOKES 6 Mechanical Booster Pumps

Features and Benefits

  • Increased lifetime, reliability and simple to use: large diameter shafts, ring feeder keyless gear locking system and dynamically balanced impellers
  • Easy to maintain: single mechanical seal
  • Increased productivity: 5 seal design for optima process protection
  • Configured for your needs: bare shaft or direct drive, 1800-3600 rpm, vertical or horizontal gas flow orientation with by-pass versions available
  • Simple to service: simple maintenance requirements result in long term reliability


  • Automotive
  • Chemical processing
  • Heat treatment
  • Leak detection
  • Metallurgy
  • PET processing
  • Pharmaceuticals
  • Thermal processing
  • Transformer drying and cable fluid conditioning
  • Vacuum coating
  • Vacuum melting


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