NOTOS™ Multi Screw Pump

The NOTOSTM Multiple Screw Pump (MSP) family has superior quality standards to meet the our customers highest level of requirements. With its own unique design, the NOTOSTM multiple screw pump is engineered to cover a wide range of applications.

Working Principal

The pumps are designed to work with low to high lubricant fluids, low to high viscosity, shear sensitive and/or chemically aggressive media.

The MSP is applicable in the following markets:

  • Oil & Gas
  • Marine
  • Power
  • General Industry

2 NS - Two Screw Pump
This pump operates with a drive screw intermeshing with a driven screw which transfers torque from one to the other. The screws are surrounded by a pump housing made of ferrous material. The screw geometry and the housing form the pumping chamber. Rotation, screw diameter, and screw pitch define the pump‘s flow rate. The product lubricates the internals. Four special bushings keep the screws aligned. The axial force resulting from the pumping motion is practically nothing due to the pump’s hydraulic balancing.

3 NS - Three Screw Pump
This pump operates with a drive screw intermeshing with two driven screws that transfer torque from one to the other. The screws are surrounded by a pump housing made of ferrous material. The screw geometry and the housing form the pumping chamber. Rotation, screw diameter, and screw pitch define the pump‘s flow rate. The product lubricates the internals. Four special bushings keep the screws aligned. The axial force resulting from the pumping motion is practically nothing due to the pump’s hydraulic balancing.


4 NS - Four Screw Pump (geared twin)

Two shafts with four screws rotate inside a liner. The screws do not touch each other and do not touch the liner. There is no metal-to-metal contact in this pump design. Synchronization of the two shafts is affected by a pair of timing gears that is remote from the pump chamber. The fluid is pumped from the extremities towards the center. The pumping chamber is formed by the four screws and the liner.

Material

  • Housing: cast iron
  • Screws: nitride steel
  • Bushings: bronze
  • Optional materials upon request

Characteristics

  • Hydraulically balanced
  • High suction power (up to 8 m.a.s.l.)
  • Quiet operation
  • Continuous flow without pulsation
  • Flow without turbulence
  • Mechanical seal under suction pressure
  • No foaming
  • Low maintenance
  • Low lifecycle cost
  • Long lifetime in service
  • Hydrodynamic bearing

2 NS - Two Screw Pump

For light or heavy lubricating products with medium to high viscosity

The NOTOSTM Two Screw Pumps have a drive screw intermeshing with a driven screw that transfers torque from one screw to the other.

  • Flow up to 500 m³/h (2,200 gpm)
  • Pressure up to 16 bar (230 psi)
  • Temperature up to 300° C (570° F)
  • Viscosity up to 12.000 cSt

The main advantages are hydraulically balanced, quiet operation, long lifetime in service and flow without pulsation.

 

 


3 NS - Three Screw Pump

For clean products, high lubricity and medium to high viscosities

The NOTOSTM Three Screw Pumps have one drive screw intermeshing with two driven screws that transfer torque from one screw to the others.

  • Flow up to 200 m³/h (880 gpm)
  • Pressure up to 80 bar (1,160 psi)
  • Temperature up to 300° C (570° F)
  • Viscosity up to 10,000 cSt

The main advantages are high efficiency, easy maintenance, lightweight, small footprint and low pulsation operation.

 

 


4 NS - Four Screw Pumps (Geared Twin)

For low to high lubricity, low to high viscosities and able to pump light abrasive products

The NOTOSTM Four Screw Pumps (Geared Twin Screw Pumps) have two shafts with four screws rotating inside a liner with timing gears. There is no metal-to-metal contact.

  • Flow up to 1,500 m³/h (6,600 gpm)
  • Pressure up to 80 bar (1176 psi)
  • Temperature up to 300° C (570° F)
  • Viscosity up to 50,000 cSt

The main advantages are that there is no metal-to-metal contact; the pumps comply with API 676 3rd edition; they have a small footprint and a long operational lifetime.


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