The NOTOS Multi Screw Pumps from German pump manufacturer Netzsch offers a series of self-priming pumps that deliver precise, high efficiency operation. The NOTOS range includes three models in multiple arrangements, suitable for a wide range of industries and applications.

The NOTOS design is based on the HEUD concept — High Efficiency Unique Design. The concept has resulted in a pump with precise tolerances, optimized spindle profile and optimized discharge design. The NOTOS guarantees continuous delivery with low pulsation ensuring flow with minimal turbulence resulting in high efficiency operation.

Source: Netzsch NOTOS Multi Screw PumpsSource: Netzsch NOTOS Multi Screw Pumps

The 2NS Two Screw Pump model has one drive screw, transferring torque through a hydrodynamic film to the rotating intermeshing driven screw. This results in efficient, quiet and hydraulically balanced operation. The 2NS series can deliver a flowrate of up to 650 m³/h (2,860 gpm) and a pressure of up to 16 bar (230 psi). It can handle fluid temperatures up to 300° C (570° F) and viscosities up to 100 cSt

The 3NS Three Screw Pump has one drive screw, transferring torque through a hydrodynamic film to the two rotating intermeshing driven screws. This makes the 3NS particularly suitable for non-abrasive and non-corrosive media as well as liquids with low to medium viscosity, such as lubricants. The 3NS can deliver massive pressures up to 100 bar (1450 psi) while maintaining a high level of efficiency. It can deliver flows up to 400 m³/h (1,760 gpm), pressures up to 100 bar (1450 psi) and can handle temperatures up to 300° C (570° F).

The 4NS Geared Twin Screw Pump has two shafts and four screws. The torque is transferred to the driven shaft via helical gears. This hydraulically balanced design can deliver massive flow rates of up to 2,500 m³/h (11,000 gpm) without compromising efficiency. It can deliver pressures up to 80 bar (1160 psi) and handle temperatures up to 300° C (570° F). The 4NS has no metal-to-metal contact, a long service life and excellent suction capability for fluid viscosities up to 200 cSt.

Additional upgrades are available for the NOTOS to meet the American Petroleum Institute (API) standards relevant to the oil and gas and petrochemical industries. In addition, a wide range of materials are available including grey cast iron and chrome-nickel steel, as well as duplex, superduplex or Hastelloy steel.

The NOTOS Multi Screw Pumps from Netzsch offer precision, efficiency and reliability in an easy to maintain, lightweight package. The NOTOS is suitable for a wide range of applications including oil and gas, marine, power generation, tank storage, and process industries.

To contact the author of this article, email engineering360editors@globalspec.com