F 426 mixer pump

For mixing and/or pumping

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The F 426 is ideal for mixing and/or pumping inhomogeneous media. Keep media moving that tend to separate, even during pumping. With the outlet closed, e.g. via a hand nozzle or blanking plug, the F 426 can be temporarily operated as pure mixer. By turning the adjusting lever, the pump can be easily adjusted to "mixing" or "pumping". The pump is easy to dismantle for rapid cleaning. The pump is available in stainless steel 316 and polypropylene materials. The stainless steel version is ATEX certified for use in hazardous areas.  1000 or 1200 mm long versions available for use with 200 litre drums or 1000 litre IBC's.


  • Application areas: Atex  

Technical data:

  • Flow rate: max. 240 l/min1
  • Delivery head: max. 13 mwc1
  • Viscosity: min. 1 mPas - max. 1200 mPas1
  • Outer tube diameter: min. 41 mm2 - max. 50 mm2
  • Immersion length: 1000, 1200
  • Materials outer tube: , Stainless steel
  • Media / Fluids: Acids, Alkalis, Petroleum products, Highly flammable media, Solvents, Fuels
  • Seal: with mechanical seal
  • Container: 200 l drums, 1000 l IBC
  • 1 dependent on pump model, motor and medium
  • 2 dependent on pump model

Product attributes

  • Perfect for mixing and transfer of inhomogeneous liquids
  • Two manual control levers open/close the mixing ports
  • Mixing ports allow liquid backflow for mixing back into the container
  • Mechanical seal for inner tube protects bearings from abrasive particles
  • PP version with unique steel cored inner tube for optimal driveshaft and seal support
  • Can be used with electric or compressed air motors
  • Max viscosity 1200 cP with most powerful drive motor
  • Max density 1.8 with most powerful drive motor


  • 3 operating modes in one pump:
    - Transfer
    - Transfer with simultaneous mixing
    - Mixing only
  • Functions switchable during operation
  • Easy to dismantle for cleaning
  • Unique steel re-inforced inner tube on PP model for increased strength and mechanical seal support in all operating temperature ranges
  • Temporary operation against closed valve e.g. hand nozzle, ball valv, possible (until the indicated max. operating temperature has been reached)
  • Stainless steel version ATEX certified for handling low flashpoint liquids
  • Suitable for continuous running, heavy duty operations