FP 424 Seal-less pump

With unique spiral guide bearing

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The class-leading F/FP 424 pump is ideal for transferring low-viscosity, aggressive or flammable liquids. It is suitable for free flowing, non-abrasive liquids that do not bond or crystallize. This pump is suitable for emptying drums, IBCs, tanks, vessels and basins. Flux F/FP 424 our industry standard heavy duty design, fitted with unique spiral-shaped guide bearing inside the inner tube.  This provides superior driveshaft support, increased service life, eliminates vibration and prevents build-up of unwanted deposits in the pump due to improved drainability. The pump is available in 316 stainless steel, polypropylene or polyvinylidene fluoride (PVDF) materials. The F/FP 424 in stainless steel is ATEX approved (to standard 2014/34/EU) for use in hazardous areas.

  • Application areas: Atex  

Technical data:

  • Flow rate: max. 240 l/min1
  • Delivery head: max. 30 mwc1
  • Viscosity: min. 1 mPas - max. 1200 mPas1
  • Outer tube diameter: min. 40 mm2 - max. 50 mm2
  • Immersion length: 700, 1000, 1200
  • Materials outer tube: , Polyvinylidene fluoride, Stainless steel
  • Media / Fluids: Acids, Alkalis, Petroleum products, Highly flammable media, Solvents, Fuels, Aqueous salt solutions, Aggressive media
  • Seal: Seal-less in liquid area
  • Container: Small containers, Hobbocks, 200 l drums, 1000 l IBC
  • 1 dependent on pump model, motor and medium
  • 2 dependent on pump model

* AdBlue® is a registered trademark of: Verband der Automobilindustrie e. V. (VDA)

Product attributes

  • No seal in the liquid area
  • Unique spiral-shaped guide bearing provides optimal driveshaft support
  • Class leading 24 mm heavy duty shaft bearings
  • Strong 6 mm diameter driveshaft ensures little of no deflection at high speeds
  • Two radial shaft seals prevent intrusion of vapours and liquid in the coupling area
  • Highly resistant ETFE impellers as standard
  • ATEX pump for operation in hazardous area available
  • Version free of non-ferrous metal for transferring AdBlue® available
  • Suitable for high temperature applications
  • Can be combined with various motors as required


  • No seal wear
  • Optimal drainage of the inner tube
  • Longest service life
  • All parts available to buy as spares
  • Low wear of guide bearing and shaft
  • Reversible driveshaft effectively doubles life
  • Stainless steel ATEX pump available for use in Zoned areas
  • Can be temporarily operated against closed valve (hand nozzle, valves etc.) until the indicated temperature of the materials is reached
  • Low vibration
  • Versions for use with AdBlue® also available
  • Also available in High Temperature (HT) version up to 60°C (140°F)