Robust, versatile and easy to maintain.
Versatile, compact and efficient like the K series, but for higher operating pressures up to 63 bar: the KRAL L series screw pump is the preferred choice for medium-pressure applications in the marine sector as well as numerous applications in the oil and gas, power generation, mechanical engineering and chemical industries. It has a spheroidal cast iron housing and is approved for use on board ships.

Operation, materials, components.

  • Delivery rate: 5 to 160 l/min.
  • Max. pressure: 63 bar.
  • Temperature range: -20 °C to 180 °C, magnetic coupling to 300 °C.
  • Viscosity: 7,000 mm²/s.
  • Housing: Nodular cast iron EN-GJS-400.
  • Screws: Steel, nitrided.
  • Approvals: ABS, BV, CCS, DNV, GL, LRS, MRS, NK, RINA, KR.
  • ATEX: II 2 GD b/c group II, category 2.
  • Heating: Electrical, media or steam.

L series screw pumps in the KRAL serial program.

Other pump technologies have the disadvantage that they can only be operated at low speed due to the high risk of damage. KRAL screw pumps, on the other hand, are gentle on the medium, even at high speeds. This guarantees high operating efficiency and an excellent price/performance ratio.

All screw pumps of the KRAL L series also offer reliable startup, minimal wear, and ease of maintenance, which simplify operation. Available with magnetic coupling or external ball bearing (maintenance-free).