Double Stage Pumps

AO/AB/DC SERIES (double stage versions)


  • Designed for slurries and/or acid applications.
  • The AO/AB/DC Series is the perfect solution for filter press feed or slurry transfer.
  • When pumping acid liquids, the shaft and the mechanical seal housing can be made of special alloys.
  • Maximum particle size is 1 mm, though this is dependent on the specific application.
  • Capacities from 5 a 900 m3/h (22 to 2,645 gpm).
  • The maximum head for some Hardalloy versions is 210 m/H2O.
DOUBLE STAGE pump installed


  • Applications under head
  • Abrasive liquids
  • Acid liquids even with solids in suspension
  • Operating temperature up to 90 °C


Mechanical seal with front rings double flushed or with permanent lubrication.


Pump/motor coupling:

  • By means of pulleys and V-belts
  • By means of elastic coaxial joint

These are AO/AB slurry pumps but with two bodies installed on the same shaft so that, working in series, high pressures (up to 12/15 atm) can be obtained, particularly suitable for feeding filters for high pressing.