Universal Three-Screw Pump

K-Series

is the manufacturer's best-selling universal three-screw pump. Engineered for handling lubricating, non-abrasive, and chemically inert fluids, it delivers a continuous, pulsation-free flow with exceptionally quiet operation. Its compact inline design allows for seamless integration into space-critical marine and industrial booster or supply modules.

  •  delivering smooth, pulsation-free fluid delivery across marine and industrial systems—fully customizable to your exact specifications.

  • isolated from the fluid chamber, extending operational lifespan up to 30,000 hours and minimizing maintenance.

  • to protect internal components and prevent seal seepage from contaminating the bearing assembly.

  • with SiC mechanical seal (or optional hermetic Mag-Drive) for reliable long-term performance up to 180°C.

K-Series
Product Line Flange Diameter Shaft Seal Type Max. Pressure Poles Flow Rate (Capacity)
KRAL K-Series (K 5 – K 20) DN 15 – DN 25 SiC Mechanical Seal / Mag-Drive 16 bar (232 psi) 2 / 4 5.0 – 45.0 l/min
KRAL K-Series (K 32 – K 118) DN 32 – DN 50 SiC Mechanical Seal / Mag-Drive 16 bar (232 psi) 2 / 4 35.0 – 210.0 l/min
KRAL K-Series (K 160 – K 275) DN 65 – DN 80 SiC Mechanical Seal / Mag-Drive 16 bar (232 psi) 2 / 4 / 6 150.0 – 490.0 l/min
KRAL K-Series (K 370 – K 850) DN 100 – DN 125 SiC Mechanical Seal / Mag-Drive 16 bar (232 psi) 4 / 6 320.0 – 1,450.0 l/min
KRAL K-Series (K 950 – K 2900) DN 150 – DN 250 SiC Mechanical Seal / Mag-Drive 16 bar (232 psi) 4 / 6 850.0 – 2,900.0 l/min
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