TORNADO® T2 Rotary Lobe Pump

TORNADO® Industrial Rotary Lobe Pumps T2

High Performance Rotary Lobe Pump with maximum operational reliability


NETZSCH TORNADO® industrial rotary lobe pumps are versatile stand-alone equipment. Used primarily in environmental technology and the chemical industry, these pumps handle almost any substance continuously and gently while metering in proportion to rotation speed.

Their small space requirements and high power density are some of their most important advantages. Features of the TORNADO® industrial rotary lobe pumps:

  • Tolerance of dry running
  • Self priming
  • Conveyance of media with low or high viscosity
  • Large ball passage
  • Space-saving, compact but highly efficient construction

NETZSCH TORNADO® industrial rotary lobe pumps offer you:

  • Flow rate in proportion to rotational speed
  • High dosing precision
  • Constant, low-pulsation conveyance
  • Smooth conveyance of shear sensitive media
  • Low life cycle costs and easy servicing (FSIP®)
  • Pump design and accessories in accordance with national and international standards, as well as customized models

One stop for all your needs: For the various applications in your processes, NETZSCH TORNADO® rotary and  NEMO® progressing cavity pumps are available from a single source! Take advantage of our decades of experience and expertise in positive displacement pump manufacturing.

T2 Rotary Lobe Pump - The Next Generation

T2 Rotary Lobe Pump - The Next Generation

TORNADO® Industrial Rotary Lobe Pump

Stability – The best maintenance is no maintenance

Plastic deformation and heat generation is reduced by maintaining a uniform elastomeric wall thickness within the pump chamber. Material sections, bearing selection and seal positioning combine to minimize the adverse effects on dimensional changes to pump head geometry due to temperature changes. The design and geometry of the rotors ensures a high level of durability. With the rotor fixing and drive outside of the pump chamber the rotors can have a completely flat continuous front and back face with no dead areas which eliminates the possibility of fibrous material becoming trapped and compacted. The mechanical seal design and seal face position eliminates dead areas and allows constant circulation of the media around the faces which ensures that the risk of media entrapment and compaction is minimised. The TORNADO® T2 all metal pumps can be manufactured from metals offering higher levels of cleanliness, corrosion or abrasion resistance and can therefore be applied to applications demanding the characteristics of these materials, especially in the low sanitary hygienic or chemical market sectors.

"Full Service In Place" instead of "Maintenance In Place"

Servicing a rotary lobe pump has never been so easy and all without the need for any special tools. The rotors can be removed and replaced very easily and quickly because they are not bolted or keyed to the shafts within the pump head but fixed with quick-fit non media wetted taper lock assemblies positioned and accessed outside of the pump head. The geometry of the rotors means that they can be fitted and removed independently. There are no keys dictating a unique rotor position which results in faster, easier and cleanerrotor removal and replacement and for rotor synchronisation a setting device is included as an integral part of the pump front cover. Benefitting from all these features the service time for the TORNADO® T2 has been reduced to significantly less than half the time required for servicing a conventional rotary lobe pump. The pre-set cartridge mechanical seals are fitted directly into the rotor and mounted on the shafts as one assembly. There are various cartridge mechanical seals available all of which fit into a common housing allowing for seal upgrades without modification.

Maximum reliability through design, material and range of mechanical seals

The revolutionary NETZSCH PRS (Pulsation Reduction System) guarantees an almost pulsation-free discharge that is of benefit in many process applications. Even when used in conjunction with straight bi-lobe rotors, which ensures better solid handling capability and easier maintenance, the NETZSCH PRS provides an almost pulsation-free flow which outperforms the characteristics of complex multi-lobe helical rotors.The pump chamber and mechanical seal design and position eliminates dead areas, where pump media can collect and compact.  This makes cleaning easier, either manually or by CIP.


From GSS¹ to BSS²

  • No ingress of the media into the bearing housing in the event of seal failure
  • Easy access to seal buffer/quench and barrier/flush connections
  • Visual indicator of seal performance

1GSS=Gearbox Security System
²BSS=Bearing Security Systm

Design and position of mechanical seal: cartridge unit integral with rotor

  • Uninterupted and direct flow of media to and around seal faces
  • Self draining, no dead areas
  • No wear of shafts, the seal is mounted on an integrated rotor sleeve
  • Easy assembly and disassembly


TORNADO® rotary lobe pumps have a broad application spectrum and can be used for media that has the following characteristics:

  • Abrasive, corrosive and fibrous
  • Containing solids (max. particle size up to 70 mm)
  • Low to high viscosity
  • Shear sensitive
  • Non-lubricating and lubricating

T.Agri® - The power behind farming

Designed for applications in agriculture and biogas.

T.Proc® - Reliable in your process

Designed for applications in chemical and industrial processes.

T.Sano® - The new face in food and beverage industry

Designed for applications in the food and beverage industry.

T.Envi® - The energy to drive the environmental industry 

Designed for applications in municipal and industrial water and sewage treatment plants.

Most of the accessories for NEMO® pumps can also be used with the TORNADO® rotary lobe pump:

  • pressure control devices
  • dry running protection units
  • electrical control systems
  • motor protection units
  • fittings
  • counterparts
  • shaft sealing utilities
  • flow meters
  • level gauges
  • bypass lines
  • substructure accessories
  • combustion engines
  • special tools 

In addition, there are of course many accessory parts specifically designed for the TORNADO® rotary lobe pump. 

  • Welding flanges
  • Self-adhesive foam rubber gaskets
  • Connecting pieces with square flange galvanized finish with or without inspection glass and drain valve, provision of liquids guaranteed
  • Connecting pieces in accordance with DIN 2633, galvanized or stainless steel, with or without inspection glass and drain valve, provision of liquids guaranteed
  • Connecting pieces in 90° construction in accordance with DIN 2633, galvanized, with or without inspection glass and drain valve, provision of liquids guaranteed
  • Flow regulator (bypass)
  • Superstructural parts with drive motors in Model B3
  • In Model B3 and motor stool with belt guard and transmission


The ideal pump for your application is available with the accessories that protect your process - it´s the combination that counts.

Design versions: The TORNADO® modular system is the optimum solution for every application requirement.