KRDX

KRDX | 3-phase / 50Hz
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Submersible explosion-proof pumps for slurry equipped with an agitator for transport of solid matters. Intended for explosion-proof applications in coal mines, oil/gas refineries and similar worksites under an "explosive atmosphere".

Technical Data
  • ø Discharge bore mm: 100
  • Type of Fluid: Sand/Slurry
  • Max. Solid Handling mm: 21 - 33
  • Max. dry matter %: 20
  • Max. PH Value: 5-9
  • Max. Capacity l/min: 1400 - 2200
  • Max. Head m: 14.50 - 17
  • ATEX available: Yes
  • Motor output kW: 3,7 - 7,5
  • Phase / Voltage: 3-phase / 500V / 50Hz
Performance curve
1 O
Specifications
Model Colour code curve ø Discharge bore mm Type of Fluid Max. Solid Handling mm Max. dry matter % Max. PH Value Max. Capacity l/min Max. Head m ATEX available Motor output kW Phase / Voltage
KRDX33.7
1
100 Sand/Slurry 21 20 5-9 1400 14.50 Yes 3,7 3-phase / 500V / 50Hz
KRDX45.5
2
100 Sand/Slurry 28 20 5-9 2000 16.50 Yes 5,5 3-phase / 500V / 50Hz
KRDX47.5
3
100 Sand/Slurry 33 20 5-9 2200 17 Yes 7,5 3-phase / 500V / 50Hz
ø Discharge bore mm 100
Type of Fluid Sand/Slurry
Max. Solid Handling mm 21
Max. dry matter % 20
Max. PH Value 5-9
Max. Capacity l/min 1400
Max. Head m 14.50
ATEX available Yes
Motor output kW 3,7
Phase / Voltage 3-phase / 500V / 50Hz
ø Discharge bore mm 100
Type of Fluid Sand/Slurry
Max. Solid Handling mm 28
Max. dry matter % 20
Max. PH Value 5-9
Max. Capacity l/min 2000
Max. Head m 16.50
ATEX available Yes
Motor output kW 5,5
Phase / Voltage 3-phase / 500V / 50Hz
ø Discharge bore mm 100
Type of Fluid Sand/Slurry
Max. Solid Handling mm 33
Max. dry matter % 20
Max. PH Value 5-9
Max. Capacity l/min 2200
Max. Head m 17
ATEX available Yes
Motor output kW 7,5
Phase / Voltage 3-phase / 500V / 50Hz
General
ø Discharge bore mm 100
Discharge Connection Threaded flange
ATEX available Yes
Pumping Fluid
Type of Fluid Sand/Slurry
Temperature 0-40°C
Max. Solid Handling mm 21 - 33
Max. dry matter % 20
Max. PH Value 5-9
Max. Capacity l/min 1400 - 2200
Max. Head m 14.50 - 17
Pump
Components
Impeller Semi-open type impeller
Bearings Shielded ball bearings
Mechanical Seal Dual mechancial seal in oil bath
Material
Impeller Chromium iron casting
Casing Ductile iron casting EN-GJS-700-2
Suction Plate Chromium iron casting
Pump Body Ductile iron casting EN-GJS-400
Mechanical Seal Silicon Carbide
Motor
Motor output kW 3,7 - 7,5
Starting method direct online
Suitable for VFD Yes
Suitable for Soft Starter Yes
Type, Poles Induction motor, 4 poles, IP68
Insulation Insulation class H
Phase / Voltage 3-phase / 500V / 50Hz
r.p.m. 1450
Motor Protector (built-in) Circle thermal cut-out
Rated Current 6,4 - 12,1
Material
Frame Ductile cast iron EN-GJS-400
Shaft Stainless steel EN-X30Cr13
Cable NSSHÖU 3C*2,5mm², 3C*2,5/3E, 3C*1,5ST
Cable Length 20m
Others
Dry Weight Kg 155 - 186
Pressure Resistance max. 25m
Dimensions - in mm
W1: lowest running water level
  • KRDX33.7
  • KRDX45.5
  • KRDX47.5
ModelAA1BB1DHW1
KRDX33.7415356701635369829290
KRDX45.5446387745644416838300
KRDX47.5 446387775674416868300

KRDX are submersible slurry pumps equipped with agitators recognized by both IECEx and ATEX. With the impeller, suction plate, and agitator made of high-chromium cast iron and the pump casing and motor frame made of ductile cast iron, KRDX-series pumps are excellent in terms of wear resistance, and thus suited for drainage of mud-water, sediment-containing water, and various kinds of liquid slurry. In addition, KRDX-series pumps can be built to specifications of rated voltages of 380 V to 1000 V.