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    KRAL Three Screw Pumps K Series.

    The economical, most sold KRAL pump.
    • Screw Pump Series K
      • Delivery Rate: 2900 l/min
      • Pressure: 16 bar
      • Temperature: 180 ºC
    • Screw Pump Series K
      • Delivery Rate: 2900 l/min
      • Pressure: 16 bar
      • Temperature: 180 ºC
    • Screw Pump Series K
      • Delivery Rate: 2900 l/min
      • Pressure: 16 bar
      • Temperature: 180 ºC
    • Screw Pump Series K
      • Delivery Rate: 2900 l/min
      • Pressure: 16 bar
      • Temperature: 180 ºC
    KRAL pump selection
    To set detailed values click directly on the titel of the slider.
    5 l/min 3550 l/min

    Advanced Edition »

    l/min - l/min X Confirm »
    1 mm²/s 10000 mm²/s

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    mm²/s - mm²/s X Confirm »
    0 bar 120 bar

    Advanced Edition »

    bar - bar X Confirm »
    -20 ºC 300 ºC

    Advanced Edition »

    ºC - ºC X Confirm »

    Universal use up to 16 bar.
    K series pumps are universal three screw pumps, making them the most sold KRAL pump. The K pumps have a feed pressure of 16 bar and housing made from nodular cast iron. They are approved for use onboard ships. In addition, they are equipped with sealed external bearings that are pre-lubricated for their lifetime so they are not stressed by the material being pumped and require no maintenance.


    Operation, materials, components.

    • „„Delivery rate: 5 to 2,900 l/min.
    • „„Delivery rate KFT: 5 to 510 l/min.
    • „„Max. differential pressure: 16 bar.
    • „„Temperature range: -20 °C to 180 °C, magnetic coupling to 300 °C.
    • „„Housing: Nodular cast iron EN-GJS-400.
    • „„Spindles: Steel, nitrided.
    • „„Certifications: ABS, BV, CCS, DNV, GL, LRS, MRS, NK, RINA.
    • „„ATEX: II 2 GD b/c group II, category 2.
    • „„Heating: Electrical, fluid media and steam.


    How the K three screw pump fits into the KRAL product program.
    The K series three  screw pump is available with DIN flanges in an inline configuration, and the KFT series three screw pump is available with DIN flanges at the top. Various installation methods are possible for flange-mounting, pedestal and base three screw pumps.

    Advantages of t hree screw pumps.
    Compared to other types of pumps, KRAL three screw pumps offer high capacity without taking up much space. This applies in particular at high differential pressure. The three screw pumps are self-priming, with low pulsation delivery and can be easily regulated. The single three screw  pumps, single stations and double stations are extremely compact. All K three screw pumps have an internal safety valve.

    Stop coupling damage.
    With some liquids, residue can build up, which may cause the pump to fail. A typical spot for residue to build up is at the mechanical seal. The residue damages the ball bearing, which runs hot, melts the elastomeric ring and damages the coupling. With the K series three screw pump, there is a weep hole next to the mechanical seal, to prevent the fluid from collecting and building up as residue.

    The new generation three screw pumps series K has been thoroughly reengineered. As the most sold universal three screw pump series K offers a number of benefits. The three screw pump prevents the accumulation of residue forming fluids by locating the leakage hole before the ball bearing. Secondly, KRAL offers the advanced quality of SiC mechanical seals, which contains graphite, as a solid lubricant to reduce the coefficient of friction in dry running conditions. The O rings with high fluorine content are suitable for higher temperatures and are chemically stable. The three screw pump series K offers innovative seal concepts. A proven selection of radial rotary shaft seals, mechanical seals and a hermetically sealed magnetic coupling are available as standard. A robust and compact design rounds off the profile.

    Your advantages:

    • No coupling damage through well placed leakage hole.
    • Safety reserve in dry running.
    • Low maintenance operation.
    • DIN standard.
    Read more

    Delivery and circulation of fuel and lubricants.

    Increasing pressure and circulation for booster modules.

    Increasing pressure and circulation in lubrication systems.

    Tank system support.

    Increasing pressure and circulation for separators.

    Burner pump for boilers.

    Supplying fuel to diesel engines.

    Increasing pressure and circulation for booster modules.

    Increasing pressure and circulation in lubrication systems.

    Tank system support.

    Increasing pressure and circulation for separators.

    Supplying fuel to diesel engines.

    Burner technology for ring lines and transfer pumping.

    Supplying lubrication oil for large diesel engines.

    Compressed oil shaft seals for hydrogen cooled generators.

    Increasing pressure and circulation in lubrication systems.

    Tank system support.

    Transfer of separated crude oil.

    Compressor lubrication.

    Filling and draining of tanks and transfer facilities.

    Pumping of bitumen, crude oil, diesel and HFO.

    Increasing pressure and circulation in lubrication systems.

    Lubrication pumping for gears, motors, turbines and hydraulic systems.

    Bench testing.

    Burner and transfer pumping.

    Lubrication oil applications.

    Increasing pressure and circulation in lubrication systems.

    Tank system support.

    Plastics processing, in particular polyurethane applications.

    Drainage pumping in tank systems for adhesives, wax, resins and fuel, PUR or coloring agents.

    Apportioning of fluids.

    Drum discharge pump.

    Filling and draining of tanks.

    Screw Pumps KRAL

      

    Screw Pumps KRAL Series K

      

     

    Contact Person

    Business Unit Pumps

    T +43 5577 8 66 44 - 0

    Contact inquiry »

    KRAL Operating Instructions.

    Three Screw Pumps K Series.

     

    KRAL AG | Bildgasse 40 | Industrie Nord | 6890 Lustenau | Österreich

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