KRAL Screw Pumps for Chemical Engineering.

Application examples.

KRAL customers rely on the robustness, long-term stability and energy efficiency of our products for chemical and process engineering. This applies to both new plants and to the optimization of existing chemical plants.

Product recommendations.

K series.

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.

G series.

Delivery rate: 5 to 660 l/min.
Max. differential pressure: 25 bar.
Temperature range: -10 to +120 °C (with magnetic coupling up to +300 °C).
Viscosity: 10 to 500 mm²/s.
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.

screw pump series C in horizontal installation

C series.

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.

screw pumps series L our medium pressure pump

L series.

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.

screw pump series w pump for special requirements

W series.

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.

F series.

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.

Screw pumps with
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.

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