4 NS – Четырехвинтовые насосы - NETZSCH Насосы и Системы

4 NS – Geared Twin Screw Pump

NOTOS® geared twin screw pumps have two shafts and four screws. The torque is transferred to the driven shaft via helical gears. The design is hydraulically balanced.

Performance

  • Flow up to 1500 m³/h (6600 gpm)
  • Pressure up to 80 bar (1160 psi)
  • Temperature up to 300°C (570°F)
  • Viscosity up to 50.000 cSt

Accessories

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

Arrangements

  • Housing with replaceable liner
  • Heating jacket optional

1 - Screws

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

2 - Housing

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

3 - Timing Gear

Helical or spur timing gears transfer the torque with reduced vibration and noise.

4 - Mechanical Seal

Four mechanical seals under suction pressure.


Advantages

  • High Efficiency
  • No metal to metal contact
  • Small footprint
  • Long service life
  • Excellent suction capability
  • API 676 3rd ed., optional

Применения

Loading/Unloading

  • Pump NOTOS®: 4 NS
  • Media: Vacuum residue
  • Flow rate: 550 m³/h
  • Pressure: 10 to 15 bar
  • Temperature: 50 to 150 °C
  • Viscosity: 200 to 900 cSt
  • Location: Turkey