Wilo-DrainLift WS 40/50 Basic

Series description

Special features/product advantages

  • Pressure-tight pump chamber for subterranean and aboveground installation
  • Flexible due to free selection of inlets
  • Large tank volume
  • Including pipework, level control, switchgear and pump

Design type

Pump chamber made of plastic with integrated pump as concealed pumping station or floor-mounted lifting unit


Pumping of pre-cleaned sewage without faeces that cannot be returned to the sewer system using natural falls, and for the draining of objects that are below the backflow level.


Pump chamber complete ready for connection with pipework and pump.

Scope of delivery

  • Tank (for single or twin-head pump system)
  • Built-in pipework
  • Non-return ball valve
  • Including pump
  • Level switching
  • Switchgear (for three-phase pump or double-pump system)
  • Cover with seal (can be walked on, supporting a weight up to 200 kg)
  • Hole saw Ø 124 mm, inlet seal DN 100 (for pipe Ø 110 mm)
  • 1 PVC hose section Ø 50 mm with clamps for connection of a diaphragm hand pump
  • Fixation material for floor fixation
  • Installation and operating instructions

Type key


Wilo-DrainLift WS 40E/TC40 (3~)-BV


Synthetic pumping station


Pressure outlet of the system


E = single-pump system D = double-pump system

TC 40

Built-in pump


Three-phase current motor


non-return ball valve


  • Pump chamber: PE
  • Pipework: 1.4404
  • Surface coupling: PUR
  • Non-return ball valve: Cast iron
  • Gate valve: bronze
  • Pump: Cast iron


The Wilo-DrainLift WS 40 Basic is an automatic lifting unit as a single-pump or double-pump system. The plastic shaft has integrated finning for increasing stiffness and anti-buoyancy, and also provides freely-definable inlets.

The system can be installed in buildings as a lifting unit, as well as outside buildings like a traditional pump chamber in the ground.

Technical data

  • Inlet: DN 100/DN 150
  • Ventilation: DN 70
  • Maximum pressure in the pressure pipe: 1.5 bar.


The submersible sewage pump Wilo-Drain TC 40 is preinstalled.

Duty chart

DrainLift WS 40 Basic

According to EN 12056-4, flow velocity (in the pressure pipe) must be kept between 0.7 and 2.3 m/s.


REACH Regulation

Edition 2018-10
Page format 209.9 x 296.7 mm
Number of pages 4

PDF (581 kB)


General overview 2018 Germany

Article Number 2200591
Edition 2018
Version number 1
Page format 209.9 x 297.0 mm
Number of pages 72

PDF (46 MB)


Wilo-DrainLift WS 40 Basic, WS 40-50

Article Number 2532145
Edition 1006
Version number 01
Page format A4
Number of pages 26

PDF (2 MB)



PDF: Wilo-DrainLift WS 40/50 Basic


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