KRAL Screw Pumps for Marine.
Application examples.
In future only those will be successful who have control over the ship operating costs. Time and again we optimize complete series because refinery processes or the legal provisions have changed. Our customers value our expertise and the cooperative partnership. Their high degree of trust in our loyalty allows them to openly describe their problems for which we develop solutions.
Delivery rate: 5 to 2,900 l/min.
Max. differential pressure: 16 bar.
Temperature range: -20 to +180 °C (with magnetic coupling up to +300 °C).
Viscosity: 1,1 bis 10.000 mm²/s.
Housing: Nodular cast iron EN-GJS-400.
Screws: Steel, nitrided.
Approvals: ABS, BV, CCS, DNV, GL, LRS, MRS, NK, RINA.
ATEX: II 2 GD b/c group II,
category 2.
Heating: Electrical, media or steam.
Delivery rate: 5 to 660 l/min.
Max. differential pressure: 25 bar.
Temperature range: -10 °C to
120 °C.
Housing: Nodular cast iron EN-GJS-400, Steel.
Screws: Steel, nitrided.
Approvals: ABS, BV, DNV, LRS.
ATEX: II -/3 G Ex h IIC T4...T2 -/Gc X., with mechanical seal.
II -/2 G Ex h IIC T4 ... T2 -/Gb X., with magnetic coupling.
API: Construction according to
API 676.
Delivery rate: CK: 5 to 1,750 l/min / CL & CG: 5 to 3,550 l/min.
Temperature range: -20 °C to 180 °C, magnetic coupling to 300 °C.
Pressure range: 70 bar; 100 bar.
Housing: Nodular cast iron, steel and aluminium.
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.
API: Manufactured to conform
with API.
Delivery rate: 330 to 17,660 l/min
Max. differential pressure: 25 bar.
Temperature range: -40 °C to +300 °C.
Housing: Ductile iron or welded steel.
Screws: Solid or engineered.
Approvals: ABS, BV, DNV/GL, LRS, RINA, others on request.
ATEX: II 2 GD b/c group II, category 2.
Heating: Electrical, media or steam.
API: Manufacturing according to API 676 possible.
Delivery rate: 5 to 200 l/min.
Max. pressure: 63 bar.
Temperature range: -20 °C to 180 °C, magnetic coupling to 300 °C.
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.
Delivery rate: 15 to 290 l/min.
Max. differential pressure: 120 bar.
Viscosity: > 1 mm²/s.
Max. temperature: to 180 °C, magnetic coupling to 300 °C.
Installation: Wet or dry.
Spindle housing: Nodular cast iron EN-GJS-400, polymer-coated or other material options.
Screws: Steel, nitrided.
Delivery rate: 5 to 280 l/min.
Max. differential pressure: 120 bar.
Max. temperature: +80 °C.
Viscosity: 0.2 to 500 mm2/s.
Rotation speed: up to 4,000 min-1.
ATEX: Zone 1 & 2.
Future Fuels: Biofuels, Methanol, Ammonia, Ethanol, LFO, HVO, FAME.
magnetic coupling.
Delivery rate: 5 to 3,500 l/min.
Max. differential pressure: 100 bar.
Temperature range: -20 °C to 300 °C.
Housing: Nodular cast iron EN-GJS-400, steel and aluminium.
Screws: Steel, nitrided.
Approvals: ABS, BV, CCS, DNV, GL, LRS, MRS, NK, RINA.
ATEX: II 2 GD b/c group II, category 2.
Heating: Electrical, media or steam.
Delivery rate: 5 to 280 l/min.
Max. differential pressure: 40 bar.
Temperature range: -20 °C to 180 °C.
Housing: Nodular cast iron EN-GJS-400.
Screws: Steel, nitrided.
Approvals: ABS, BV, CCS, DNV, GL, LRS, MRS, NK, RINA.
ATEX: II 2 GD b/c group II, category 2.
Heating: Electrical, media or steam.
Delivery rate: 5 to 280 l/min.
Max. differential pressure: 40 bar.
Temperature range: -20 °C to 180 °C.
Housing: Nodular cast iron EN-GJS-400.
Screws: Steel, nitrided.
Approvals: ABS, BV, CCS, DNV, GL, LRS, MRS, NK, RINA.
ATEX: II 2 GD b/c group II, category 2.
Heating: Electrical, media or steam.
