Wilo-DrainLift M

Series description

Your advantages

  • Space-saving installation
  • Easy-to-install thanks to low weight and large scope of delivery
  • Flexible due to free selection of inlets
  • Operationally reliable with integrated thermic motor protection and mains-independent alarm


Sewage lifting unit as single pump system or double-pump system


Pumping of sewage containing faeces (according to DIN EN 12050-1) that cannot be returned to the sewer system using natural falls, and backflow resistant drainage of discharge points below the backflow level (according to DIN EN 12056-1).


  • Ready-to-plug
  • Thermal motor monitoring
  • Level control with float switch
  • Mains-independent alarm
  • Potential-free contact
  • Pump cable detachable
  • Non-return valve (RV version)
  • Inlet seal
  • Hole saw for inlet borehole
  • Hose connection for ventilation
  • Seal for suction pipe connection for diaphragm hand pump
  • Kit for pressure pipe connection
  • Fixation material
  • Soundproofing material
  • Switchgear

Scope of delivery

Connection-ready sewage lifting unit, including:

  • Switchgear with mains-independent alarm and plug:
  • 1x inlet seal DN 100
  • 1x hole saw for inlet DN 100
  • 1x lip seal for connection of diaphragm hand pump or inlet connection Ø 50 mm
  • 1x collar for ventilation connection DN 70
  • 1x flange connector DN 80/100 with flat gasket, flexible hose section and fixing material for discharge pipe connection DN 100
  • 1x DN 80 non-return valve (only for M1/8RV and M2/8)
  • Sound absorption strips for sound insulation installation
  • 9 V rechargeable battery
  • Fixation material
  • Installation and operating instructions

Type key


Wilo-DrainLift M1/8 (1~) RV


M1 = single-pump system M2 = double-pump system


Max. delivery head [m]


1~: Single-phase version, 3~: Three-phase version


Version with non-return valve without details: Version without non-return valve

Technical data

  • Mains connection 1~230 V, 50 Hz or 3~400 V, 50 Hz
  • Power consumption P1 = 1.3 kW
  • Cable length from system to switchgear 4 m / plug cable 1.5 m
  • Operating mode S3-15%, 80 sec
  • Fluid temperature max. 40 °C, for short periods (3 min.) 60 °C
  • Max. ambient temperature of 40 °C
  • Free ball passage 45 mm
  • Pressure port DN 80
  • Inlet connection DN 40 / DN 100 / DN 150
  • Ventilation connection DN 70
  • Min. suction head (installation level to middle of inlet) 180 mm
  • Protection class (without switchgear) IP 67
  • Gross tank volume 62 l to 115 l, depending on type
  • Switching volume 24 l to 40 l, depending on type


  • Motor housing: Stainless steel 1.4301
  • Hydraulic housing: Cast iron EN-GJL-250
  • Impeller: PUR plastic
  • Tank: PE plastic


Fully submersible sewage lifting unit, ready for connection (flooding height: 2 mWS, overflow time: 7 days) with a gas and watertight collection tank equipped with buoyancy safeguards. Centrifugal pump with vortex impeller.

DrainLift M1/8:

Single-pump system with single-phase or three-phase AC motor for automatic operation. Switchgear with shock-proof or CEE plug, potential-free contact, integrated and mains-independent alarm and adjustable follow-up time.

RV version with non-return valve included in the scope of delivery.

DrainLift M2/8:

Double-pump system for automatic operation (with automatic duty cycling, standby and peak-load operation). Due to the integrated double non-return valve, only one pressure pipe connection is required. Switchgear with shock-proof or CEE plug, potential-free contact, maintenance interval display, early fault detection and integrated and mains-independent alarm and adjustable follow-up time.

Attention: The switchgear is not submersible and must therefore be arranged in such a way that it is overflow-proof.


REACH regulation

Edition 2020-08
Page format 209.9 x 296.7 mm
Number of pages 4

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PDF: Wilo-DrainLift M


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