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Wilo-DrainLift KH 32


Small sewage lifting unit (floor-mounted installation)


Sewage lifting unit ready for connection for limited use (in direct connection behind a stand-alone toilet) with macerator for the disposal of the sewage from an individual toilet in addition to a hand washbasin, a shower or a bidet, the wastewater/sewage of which cannot be conveyed to the sewer system via natural slope and/or for the disposal of wastewater that accumulates below the backflow level. Compliance with DIN EN 12050-3 and DIN 1986‐100 is required. We recommend using Wilo-DrainLift S to XXL as well as FTS series products when connecting several or different drainage fixtures.

Max. pressure pipe lengths DN 32, for optimal operation, the first section of the pressure pipe should be positioned vertically and then the rest continued horizontally if at all possible (2 bends of 90° and a built-in non-return valve are taken into account).

Type key

Example: Wilo-DrainLift KH 32-0.4
KHKH Small lifting unit with macerator for sewage containing faeces
32Nominal diameter of the discharge port (DN 25/32)
– 0.4Nominal motor power [KW]

Special features/product advantages

  • Contemporary, space-saving design
  • Quick and easy installation: self-sealing direct toilet connection
  • Built-in active carbon filter
  • Ready-to-plug


  • Motor housing: stainless steel 1.4301 (AISI 304)
  • Hydraulics: PP‐GF30 plastic
  • Tank: ABS plastic

Technical data

  • Mains connection 1~230 V, 50 Hz
  • Mains connection cable 1.2 m, with shock-proof plug
  • Operating mode: Intermittent operation S3 ‐ 28 %
  • Fluid temperature max. 35 °C
  • Ambient temperature max. 35 °C
  • Free ball passage 10 mm
  • Pressure port DN 25/32
  • Inlet connection 2 x DN 40 / DN 100
  • Ventilation 25 mm
  • Min. suction head (installation level to middle of inlet) 180 mm
  • Protection class IP 44
  • Gross tank volume 17 l
  • Switching volume 2.6 l


  • Ready-to-plug
  • Thermal motor monitoring
  • Level control with pneumatic pressure transducer
  • Non-return valve
  • Macerator
  • Inlet seal
  • Kit for pressure pipe connection
  • Active carbon filter


Automatically operating small lifting unit with macerator, all switchgears and control units required, built-in non-return valve, active carbon filter, flexible pressure port and connection options for one toilet, two additional drainage fixtures and one ventilation pipe. The DrainLift KH 32 small lifting unit is connected directly to a toilet basin with a horizontal connecting piece. The connections for additional drainage fixtures and for the pressure pipe are at the back of the system and can be guide out either to the right or to the left. Odour-free exhaust ventilation into the installation room is implemented by means of an integrated active carbon filter or a ventilation pipe over the roof.

Inlet connection:

  • DN 100 (direct connection via sealing collar)
  • 2 inlets – DN 40 including blind cover and a non-return valve

Connection pressure side:

  • Pressure port hose angle DN 25/32 including non-return valve


  • Choice of integrated active carbon filter with overflow protection or connection of a separate ventilation pipe at roof level by means of a self-sealing plug coupler (outside pipe Ø 25 mm).

Scope of delivery

Lifting unit ready for connection with macerator, active carbon filter, flexible pressure port and installation and operating instructions.

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