F 425 99.98% emptying pump

Minimise waste and improve safety

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When using FP 425 there can be less than 0.05 l residual amount left in a 200 l drum, so maximum 0.02 %. The pump has an integrated backflow valve that can be closed before removing the pump from the container. Thus backflow of remaining liquid in the pump and discharge hose is prevented. These pumps can be specified for use with barrels, drums or IBC's. The F425 is ideal for use with expensive or dangerous liquids where spills and waste should be avoided. It also saves on cleaning and disposal costs when handling problematic chemicals. The pump is available in stainless steel, polypropylene and hastelloy C materials.  FFKM o-rings are available if the pump will be used for particularly aggressive liquids. The stainless steel pump is ATEX certified for use in hazardous areas.

 

  • Application areas: Atex  

Technical data:

  • Flow rate: max. 120 l/min1
  • Delivery head: max. 26 mwc2
  • Viscosity: min. 1 mPas - max. 1200 mPas2
  • Outer tube diameter: min. 41 mm3 - max. 50 mm3
  • Immersion length: 700, 1000, 1200
  • Materials outer tube: Hastelloy C, Polypropylene, Stainless steel
  • Media / Fluids: Acids, Alkalis, Fuels, Highly flammable media, Petroleum products, Solvents
  • Seal: with mechanical seal
  • Container: 1000 l IBC, 200 l drums
  • 1 The maximum delivery rate is a test bench value, measured with water at 20 ° C at the pressure port of the pump, without accessories (hose, nozzle, flow meter). The practically achievable delivery rate is lower. It depends on the individual application, the fluid properties and the pump configuration. Please refer to technical data sheets / performance diagrams.
  • 2 dependent on pump model, motor and medium
  • 3 dependent on pump model

Product attributes

  • Fitted with mechanical seal
  • Suitable for drums and IBC’s
  • Available in stainless steel 316 or polypropylene
  • Choice of o-ring materials and impeller designs
  • Polypropylene version with steel-cored inner tube for ultimate strength
  • Backflow stop valve eliminates drain-back
  • Running against closed valve (e.g. hand nozzle) possible
  • Double radial shaft seals prevent vapour ingress into the coupling area

Benefits

  • Leaves less than 0.05 l residual volume in a 200 l drum
  • Reduction in cleaning and waste disposal costs
  • Ideal for preserving high value liquids
  • Minimise spillage when moving the pump from drum to drum
  • Perfect for corrosive or flammable liquids
  • Steel-cored inner tube on PP model delivers high stability at extreme temperatures
  • Stainless steel and hastelloy C versions suitable for use in hazardous (Ex) areas
  • Appropriate motors

    Commutator motor
    FEM 4070
    Delivery rate max. 105 l/min
    Delivery head max. 7,5 mwc

    F 457 / F 457 EL
    Delivery rate max. 120 l/min
    Delivery head max. 11 mwc

    F 458 / F 458 EL
    Delivery rate max. 90 l/min
    Delivery head max. 7 mwc

    F 460 Ex / F 460 Ex EL
    Delivery rate max. 90 l/min
    Delivery head max. 7 mwc

    F 458-1 / F 460-1 Ex
    Delivery rate max. 110 l/min
    Delivery head max.10 mwc

    Brushless motor
    FBM 4000 Ex
    Delivery rate max. 110 l/min
    Delivery head max. 7,5 mwc

    Three-phase gear motor
    F 414
    Delivery rate max. 100 l/min
    Delivery head max. 7 mwc

    Compressed-air motor
    F 416 Ex / F 416-1 Ex / F 416-2 Ex
    Delivery rate max. 110 l/min
    Delivery head max. 12 mwc

    The maximum delivery rate is a test bench value, measured with water at 20°C at the pressure port of the pump, without accessories (hose, nozzle, flow meter). The practically achievable delivery rate is lower. It depends on the individual application, the fluid properties and the pump configuration. Please refer to technical data sheets / performance diagrams.

  • Media examples

    Outer tube polypropylene:
    Hydrochloric acid, boric acid, sulfuric acid, citric acid, lactic acid, phthalic acid, sodium hydroxide, potassium hydroxide, ammonia water

    Outer tube material stainless steel:
    Petroleum, diesel, heating oil, hydraulic oil, machine oil, engine oil, gasoline, formic acid (85 %), ethyl glycol, petroleum, "MEK (methyl ethyl ketone = butanone), octane, ethanol, methanol, butanol, acetan, toluene, isobutanol, propanol, xylene, urea solutions, naphtha, diesel

    Outer tube Hastelloy C:
    Gasoline, formic acid (85%), ethylene glycol, petroleum, MEK (methyl ethyl ketone = butanone), octane

     

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