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Cellar drain Pumpfix S

Cellar drain with backwater valve and pump

Also ideal for draining steps down to the cellar

Wastewater disposal even when water backs up

If wastewater (without sewage only) occurs when the backwater valve is closed, the pump automatically switches on from a certain level and disposes reliably of washwater into the sewer even against backwater pressure.


For safe protection from backwater and draining through floor drains below the backwater level that have to be used even during the backflow phase.


  • Showers, sinks and washing machines
  • Dripwater connections on safety valves and heating equipment
  • Cellar steps up to max. 20 m²


  • Free gradient to the sewage pipe
  • Rooms with lower-priority use according to DIN 12056-4

Must not be used:

  • For draining wastewater collected above the backwater level
  • For rainwater, with the exception of cellar steps

How it works

Regular operation.
Backwater protection: flap is closed.
Wastewater discharge during backwater.

Technical data

Type of current: Alternating current
Voltage: 230 V
Current: 2,12 A
Motor capacity: P1/P2 480 W / 320 W
Speed: 2800 min-1
Motor protection: Built into the motor
Plug Safety: plug, 5 m cable

Pumping capacity diagram

Product advantages

  • Can be adapted to the floor covering through tilable and variable upper cover section
  • Installation also possible in impermeable concrete
  • Optimum pipe cleaning by removing the pump
  • Attachment of further feed pipes directly on site
Tilable cover
Flexible installation

For new buildings

For renovation

Further cellar drains with backwater protection can be found here.


Bahnhofstraße 31, 85101 Lenting, Germany
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