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NK | 1-phase / 50Hz

Generally applicable highgrade pump that can be used efficiently in draining in civil engineering through to deepwell applications.
Maximum depth of submersion 25m.

NK | 1-phase / 50Hz
ModelColour code curveBore mmMotor output kWRated current AHead max. mCapacity max. l/minDry weight kg w/o cableMax. solid handling ø mmPressure resistance max. mCable length m
NK4-22 50 2,2 14,8 24,0 525 29,0 6 25 20
NK3-22L 80 2,2 14,5 18,0 800 40,0 6 25 20
ø Discharge bore mm 50, 80
Pumping Fluid Temperature 0-40°C
Type of Fluid Spring water, Rain water, Ground water, Sand carrying water
Pump Compo- nents Impeller Semi-Vortex impeller
Shaft Seal Double mechanical seal
Bearings Shielded ball bearings
Material Impeller Ductile iron casting EN-GJS-700-2, Chromium iron casting
Casing BR+natural rubber, Grey iron casting EN-GJL-200
Shaft Seal Silicon carbide in oil bath
Motor Type, Poles Induction motor, 2 poles, IP68
Phase / Voltage Single phase 230V / 50Hz
Insulation Insulation class F, Insulation class B
Lubrication Turbine oil (ISO VG32)
Motor Protector (built-in) Circle thermal cut-out
Material Casing Aluminium die casting
Shaft Stainless steel EN-X6Cr13, Stainless steel EN-X30Cr13
Cable Rubber, 10m H07RN8-F
Discharge Connection Threaded flange/Hose coupling

Dimensions in mm:

  • NK4-22
  • NK3-22L

W1: lowest running water level

In the event of abrasive and corrosive utilization, stronger wear and tear will take place naturally in certain components. In this regard, please pay attention to our website www.tsurumi.eu/english/applications.htm.