Drive Screw Transmits the Torque via a Hydrodynamic Film to the Second Screw
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
Internal or external relief valve
API 682 cartridge seals
Various API seal plans
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.
Long service life
Excellent suction capability
API 676 3rd ed., optional
Pump NOTOS®: 2 NS
Media: Fuel Oil
Flow rate: 16 m³/h
Pressure: 4 bar
Temperature: 50 °C
Viscosity: 30 cSt