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NOTOS® 3 NS – Three Screw Pumps

Product type: Pumps and Systems
Description: This pump has one drive screw, transferring torque through a hydrodynamic film to the two rotating intermeshing driven screws. Screws are encased in housing made of ferrometal. Screw geometry and housing shape the pump chamber. Rotating speed, screw diameter and screw pitch determine the speed of flow. Inside lubricated by the medium. Four special bearing bushes keep the screws aligned. Axial force resulting from pumping is close to zero because of hydraulic balancing of the pump.


  • Flow up to 400 m3/h (1760 gpm)
  • Pressure up to 80 bara (1160 psi)
  • Temperature up to 300°C (570°F)
  • Viscosity up to 15.000 cSt


The main advantages are that there is no metal contact, complies with API 3rd edition, small footprint and long operational lifetime,


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