Davey D75KA Automatic Single Channel Cutter Pump



Single channel, sewage handling submersible sump pumps with a cutting impeller, capable of pumping semi-screened or grey water of neutral pH. Primarily used for sewage water pumping, the Davey Cutter pumps can also be used for sump emptying, septic effluent disposal, water transfer, pumping light slurries and factory waste, or pumping wastewater with stringy or long soft solids in suspension. Ideal for sewage water pumping, sump emptying, septic effluent disposal, water transfer, pumping of light slurries and factory waste and pumping wastewater with stringy or long soft solids in suspension.


  • Sewage water pumping
  • Sump emptying
  • Septic effluent disposal
  • Water transfer
  • Pumping of light slurries and factory waste and pumping waste water with stringy or long soft solids in suspension.


  • Corrosion-resistant 304 stainless steel shaft, motor shell and fasteners for a long service life and an attractive, lasting appearance
  • Open impeller, single channel, centrifugal design with cutting leading edge.
    • able to pump soft solids in suspension
    • less susceptible to blockage
    • capable of higher heads/pressure
    • able to cut string-like materials, reducing the risk of blockage in pump or pipework
  • Double mechanical shaft seal in oil bath with hard-faced silicon carbide/ceramic seal on pump side/sand slinger lip seal for added motor protection and long service life
  • Automatic resetting thermal overload for protection against overloading
  • D75KA model fitted with automatic float switch with a present float length for safe unattended operation.
  • All units fitted with10m harmonized cable with bared ends for easy connection to the power supply and long life in dirty water
  • Mounting base fitted for a firm and stable positioning during installation and operation
  • Slide rail kits available for easy removal and re-installation
  • Hose tail provided for temporary installations; ideal for use with lay-flat hose (hose clamp not include
  • Available with a choice of single or three phase motors
  • Also available in 60Hz model



Maximum submergence 20m
Maximum operating temperature 40ºC
Maximum soft solids up to 80% of discharge size


Suitable Fluids

  • Semi-screened sewage or “grey water” of neutral pH containing up to 20% small soft solids or 1% string-like solids. Some wear should be expected while pumping hard solids in suspension.

Note: Cutter pumps are not suitable for sanitary products - use Grinder models.


  Common to all models Common to all models
Speed D75KA, DT08K, DT15K, DT22K, DT37K 2 pole, 2850 rpm
Speed DT55K, DT75K 4 pole, 1450 rpm
Insulation class Class F Class F
IP rating X8 X8
Electrical lead H07RNF x 10m length H07RNF x 10m length
Insulation class Class F Class F
  D75KA DT08K
Supply voltage 220-250V 380-440V
50Hz - Phase Single Three
Output power 0.75kW 0.75kW
Full load current 7.5A 1.9A
Locked rotor current 22.5A 10.5A
Starting CSIR DOL
  DT15K DT22K DT37K DT55K DT75K
Supply voltage 380-440V 380-440V 380-440V 380-440V 380-440V
50Hz - Phase Three Three Three Three Three
Output power 1.5kW 2.2kW 3.7kW 5.5kW 7.5kW
Full load current 3.0A 4.5A 6.7A 11A 16A
Locked rotor current 22A 31.5A 49A 66A 78A



Impeller Cast iron
Cutting tip Tungsten carbide
Diffuser plate Hardened case iron
Pump casing Cast iron
Outlet Cast iron
Shaft seal: - pump side - motor side Silicon carbide/ceramic Carbide/ceramic Mechanical seals
in captive oil bath with oil seal
Shaft seal elastomer Nitrile rubber
Pump shaft 304 stainless steel
O-rings Nitrile rubber
Motor shell 304 stainless steel
Handle 304 stainless steel + NBR
Fasteners 304 stainless steel
Float & power supply leads HO7RN-F oil resistant



Use a rope to position and retrieve the pump. Do not lower or retrieve the pump using the power lead as this may damage the cable entry seals, causing water leaks and unsafe operation.

Don’t use this product for recirculating or filtering swimming pools, spas, etc. While these pumps are built to high safety standards, they are not approved for installations where people will be in the water while they are operating.

Don’t pump abrasive materials. Sand and grit in the water being pumped will accelerate wear, causing shortened pump life.

Keep your pump clean, particularly in situations where lint, hair or fibrous materials may get bound around the pump shaft. Regular inspection and cleaning will extend pump life.

Make room for the float switch to operate. Automatic models have a float switch to turn them on when the water level rises and turn them off again when it has been pumped down to the safe operating level of the pump. If the float switch is

not free to rise and fall, correct pump operation may not be possible.

Don’t run your pump dry. Non-automatic models must be switched off manually or by way of an external float/level switch when the water level is reduced to the top of the pump housing.




Davey D75KA Automatic Single Channel Cutter Pump Davey D75KA Automatic Single Channel Cutter Pump Brochure