Wilo-DrainLift S


Compact sewage lifting unit with integrated pump


Complete sewage lifting unit ready for connection in accordance with DIN EN 12050-1.

For the pumping of raw sewage that cannot be piped to the sewer system through the use of natural inclines. Wilo-DrainLift S meets the requirements of DIN EN 12050-1 and DIN EN 12056. Minimum dimensions, combined with space-optimised installation area enable a wide range of different application options for:

  • Retrofitting installation of showers, toilets, saunas, etc.
  • Installation of toilets in basement flats
  • Expansion/renovation of flats and buildings
  • Innovative combination of different installation options for sewage lifting units in a single system, e.g.:
    • Direct toilet connection
    • Drainage of individual rooms
    • Front wall installation/recessed wall installation

Can be used in the following installation types:

As conventional sewage lifting unit for connection of a wall-mounted or stand-alone toilet or for complete room drainage. Due to compact design, system requires only minimum space.
In conjunction with front wall installation/recessed wall installation, used as sewage lifting unit, integrated into commercially available front wall installation systems, in recessed wall installation as well as in pedestal profiles.


It must be possible to both install and remove the system after laying tiles. Observe installation instructions and accessories.

Type key

Example: DrainLift S1/5 (1~)
S1 Single-pump system
/5 Max. delivery head [m]
(1~) 1~: Single-phase version
3 ~: Three-phase version

Special features/product advantages

  • Space-saving installation, front-wall installation possible
  • Retrospective installation possible for drainage of showers, toilets or other drainage objects
  • Easy to install thanks to low weight and high scope of delivery, incl. non-return valve
  • Flexible due to free selection of inlets
  • Operational reliability, thanks to reliable, pneumatic level recording


  • Motor housing: stainless steel 1.4404 (AISI 316L)
  • Hydraulic housing: PE/PUR plastic
  • Impeller: PUR plastic
  • Tank: PE plastic

Technical data

  • Mains connection 1~230 V, 50 Hz or 3~400 V, 50 Hz
  • Power consumption P1 from 1.1 to 1.25 kW, depending on type
  • Cable length from system to switchgear/plug 4 m
  • Operating mode S3-15%, 120 sec
  • Fluid temperature max. 35 °C, for short periods up to 60 °C
  • Max. ambient temperature of 40 °C
  • Free ball passage 40 mm
  • Pressure port DN 80
  • Inlet connection DN 40 / DN 100
  • Ventilation connection DN 70
  • Min. suction head (installation level to middle of inlet) 180 mm
  • Protection class (without switchgear) IP 67
  • Gross tank volume 45 l


  • Ready-to-plug
  • Thermal motor monitoring
  • Level control with pneumatic pressure transducer
  • Potential-free contact
  • Pump cable detachable
  • Non-return valve
  • Inlet seal
  • Hole saw for inlet borehole
  • Hose connection for ventilation
  • Hose connection for diaphragm hand pump
  • Fixation material
  • Soundproofing material


Stainless steel motor

Proven construction in modern INOX & Composite design, including efficiency-optimised vortex impeller.

Carrying handle and fastening strap

Easy handling, reliable standard-compliant installation and fixation (for buoyancy safeguards).

Inlet DN 40

For additional inlets from washbasins, bathtubs, etc.

Freely selectable inlets

Open areas on both lengthways sides and on a facing side provide the widest possible range of connection flexibility (see illustration). Observe the minimum suction head of the drainage fixtures.


Installation beading

For commercially available front-wall installation systems.

Standard sound absorption strips or material

Prevent structure-borne noise transmission.


Large inspection opening. Inclined collection space for deposit-free, reliable operation. Connection possibility for a DN 70 ventilation pipe and for a diaphragm hand pump

Scope of delivery

Sewage lifting unit ready for connection

  • Sewage lifting unit ready for connection with cable and plug
  • 1x inlet seal DN 100
  • 1x hole saw for inlet connection DN 100
  • 1x non-return valve DN 80
  • 1x collar for connection of diaphragm hand pump or inlet connection Ø 50 mm
  • 1x collar for ventilation connection DN 70
  • 3x sound absorption strips for sound insulation installation
  • Fixation material
  • Installation and operating instructions