NOTOS® 3 NS – Three Screw Pump:

Drive Screw Transmits the Torque via a Hydrodynamic Film to the Two Driven Screws


  • Flow up to 400 m³/h (1.760 gpm)
  • Pressure up to 80 bar (1160 psi)
  • Temperature up to 300°C (570°F)
  • Viscosity up to 15.000 cSt


  • Internal or external relief valve
  • Vibration sensors
  • Temperature sensors
  • API 682 cartridge seals
  • Various API seal plans


  • Foot, vertical, semi-submersible
  • Housing with replaceable liner, light, top tank version
  • Heating jacket optional

NOTOS® Three Screw Pump

Cut Section of the NOTOS® Triple Screw Pump

1 - Screws

Nitrated in alloy steel or in stainless steel. The HEUD (High Efficiency Unique Desgin) provides excellent performance.

2 - Housing

Various ports configurations such as top top, side top or in line.

3 - Bearing Bushes

Nitrated bushes help to prevent start up failures and help to support radial loads.

4 - Mechanical Seal

Under suction pressure just one mechanical seal is required for the 3NS. Magnetic drive optional.


  • High efficiency
  • Easy maintenance
  • Lightweight and small footprint
  • Low pulsation
  • API 676 3rd ed., optional

Compressor Lubrication

  • Pump NOTOS®: 3 NS
  • Media: Lube oil
  • Flow rate: 25 m³/h
  • Pressure: 7,5 bar
  • Temperature: 50 °C
  • Viscosity: 70 to 1000 cSt
  • Location: India
NOTOS® Multi Screw Pumps used for Compressor Lubrication - Transfer of Lube Oil Application