2 NS – Two Screw Pump

NOTOS® two screw pumps have one drive screw, transferring torque through a hydrodynamic film to the rotating intermeshing driven screw.

Performance

  • Flow up to 500 m³/h (2200 gpm)
  • Pressure up to 16 bar (230 psi)
  • Temperature up to 300°C (570°F)
  • Viscosity up to 25.000 cSt

Accessories

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

Arrangements

  • Foot, vertical, semi-submersible, housing with replaceable liner or flange mounted
  • Heating jacket optional

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

Internal bearing bushes helps to support radial loads.

4 - Mechanical Seal

Under suction pressure just one mechanical seal is required for the 2NS. Magnetic drive optional.

Advantages

  • High efficiency
  • Hydraulically balanced
  • Quiet operation
  • Long service life
  • Low pulsation
  • Excellent suction capability
  • API 676 3rd ed., optional

Applications

Burner Feeding

  • Pump NOTOS®: 2 NS
  • Media: Fuel Oil
  • Flow rate: 16 m³/h
  • Pressure: 4 bar
  • Temperature: 50 °C
  • Viscosity: 30 cSt
  • Location: Italy

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