High-Pressure Three-Screw Pumps

G-Series

is engineered for demanding high-pressure applications requiring pulse-free delivery of lubricating and chemically neutral fluids. Featuring a robust insert/cartridge construction, the G-Series can withstand differential pressures up to 100 bar (1,450 psi) with exceptional volumetric efficiency. Its modular housing options—available in ductile iron or fabricated steel—allow flexible flange configurations for seamless integration into marine, power generation, and oil & gas systems.

  • Built to reliably generate pressures up to 100 bar (1,450 psi), making it ideal for high-pressure burner feed and heavy-duty hydraulic loops.

  • Allows rapid maintenance and component replacement without disconnecting the main pump casing from the system piping.

  • Accommodates standard mechanical seals, hard-faced seals, API 682 cartridge seals, or hermetic Mag-Drive couplings for zero-leakage safety.

  • Steel casing models allow custom flange standards (DIN, ANSI) and multidirectional port alignments to fit tight engine rooms.

G-Series
Product Line Flange Diameter Shaft Seal Type Max. Pressure Poles / Drive Flow Rate (Capacity)
KRAL G-Series (G 15 – G 42) DN 25 – DN 40 Mechanical Seal / Mag-Drive 100 bar (1,450 psi) 2 / 4 15.0 – 42.0 l/min
KRAL G-Series (G 55 – G 118) DN 50 – DN 65 Hard-Face Mech. Seal / Mag-Drive 100 bar (1,450 psi) 2 / 4 55.0 – 120.0 l/min
KRAL G-Series (G 160 – G 275) DN 80 – DN 100 Balanced Seal / API 682 / Mag-Drive 100 bar (1,450 psi) 2 / 4 / 6 160.0 – 280.0 l/min
KRAL G-Series (G 370 – G 850) DN 125 – DN 150 Cartridge Mech. Seal / Mag-Drive 100 bar (1,450 psi) 4 / 6 370.0 – 850.0 l/min
KRAL G-Series (G 950 – G 3500) DN 200 – DN 300 API 682 Cartridge / Mag-Drive 100 bar (1,450 psi) 4 / 6 950.0 – 3,500.0 l/min
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