KRSU | 3-phase / 50Hz

Three-phase drainage pump with a large solids passage capacity, designed for temporary over-pumping during sewer refurbishment. Its narrow shape & top discharge enables it to be fitted within a manhole.

Technical Data

  • Discharge bore mm: 200
  • Head max. m: 26,5
  • Capacity max. l/min: 5700
  • Motor output kW: 22,0
  • Phases: 3
  • Max. solid handling ø mm: 56
Performance curve

Model Colour code curve Discharge bore mm Phases Motor output kW Head max. m Capacity max. l/min Max. solid handling ø mm
KRSU822 200 3 22,0 26,5 5700 56

Discharge bore mm 200
Phases 3
Motor output kW 22,0
Head max. m 26,5
Capacity max. l/min 5700
Max. solid handling ø mm 56
ø Discharge bore mm 200
Discharge Connection Hose coupling
Impeller Vortex impeller
Shaft Seal Double mechanical seal
Bearings Shielded ball bearings
Impeller Grey iron casting EN-GJL-200
Casing Grey iron casting EN-GJL-200
Shaft Seal Silicon carbide in oil bath
Pumping Fluid
Type of Fluid Grey water, slightly polluted water, sewage water
Temperature 0-40°C
Type, Poles Induction motor, 4 poles, IP68
Insulation Insulation class F
Phase / Voltage 3-phase / 400V / 50Hz / d.o.l.
Motor Protector (built-in) Circle thermal cut-out
Lubrication Turbine oil (ISO VG32)
Casing Grey iron casting EN-GJL-200
Shaft Stainless steel EN-X30Cr13
Cable Rubber, NSSHÖU
Dimensions in mm:
W1: lowest running water level
  • KRSU822

The KRSU822 submersible three-phase cast iron heavy-duty pump is designed and built specifically for temporarily bypassing drainage in sewer construction work. With a maximum head of 26.5 m, maximum capacity of 5.7 m3/min, and space-saving design of 546 mm in diameter, this pump plays an active role in drainage in the deep confined space of a manhole.

Also, with its semi-vortex structure, this pump provides a large solids passage of 56 mm in diameter, which prevents any clogging of solids matter. The top discharge, side flow design assures efficient motor cooling even when operating with the motor exposed to air.