DrainLift WS 40-50

Series description

Your advantages

  • Pressure-tight pump chamber for subterranean and aboveground installation
  • Flexible due to free selection of inlets
  • Large tank volume
  • Surface coupling made of corrosion-resistant PUR


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


Pumping of sewage containing faeces or pre-cleaned sewage that cannot be returned to the sewer system using natural falls, and for the draining of objects that are below the backflow level.

Scope of delivery

  • Tank (for single or twin-head pump system)
  • Built-in stainless steel pipework
  • Gate valve in red bronze
  • Surface coupling made of corrosion-free plastic (PUR) with built-in non-return valve
  • 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

Notice! Pump is not included in the scope of delivery!

Type key


Wilo-DrainLift WS 40E/x


Synthetic pumping station


Pressure outlet of the system


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


Selected pump type


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


Installation-ready plastic shaft as single-pump system 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.

Suitable pumps

Drain TP 50/TP 65

  • Version with single-channel impeller and vortex impeller
  • Also with ex-rating in accordance with ATEX
  • Single-phase and three-phase AC versions available
  • Version with attached float switch available

Drain MTS 40

  • Sewage pump with macerator
  • Single-phase and three-phase AC versions available
  • Also with ex-rating in accordance with ATEX


DrainLift WS 40-50


REACH regulation

Edition 2019-10
Page format 209.9 x 296.7 mm
Number of pages 4

PDF (853 kB)



PDF: DrainLift WS 40-50


Page selection

Format selection

Optional information

You can enter any personal information that you want to be displayed in the header.