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Staufix FKA backwater valve

The reliable solution for wastewater with sewage.

Particularly reliable motor operation: In contrast to conventional backwater valves, the Staufix FKA achieves the sealing with the help of a motor. This means that it is also suitable for wastewater containing sewage – not only for showers, washbasins and washing machines, but also for toilets.

Staufix FKA is available in two versions – for installation in an exposed drainage pipe and for floor slab installation, where you can choose between a black cover or tileable cover.

Advantages  Article overview

How it works

During normal operations, both flaps are open so that all the wastewater can drain away fully. In the event of backwater from the sewer, the valve is locked by a motor and then opened again automatically afterwards.

Staufix FKA: normal operations

Normal operation

Drainage through a natural slope.

Staufix FKA: In the event of backwater

In the event of backwater

Closed flap prevents water ingress

Installation kit for the floor slab

The backwater valve is available for floor slab installation and can also be installed in waterproof concrete by using an extension piece with central flange and an elastomer waterproofing membrane. The integrated drainage function ensures that any surface water that arises, for example due to a pipe break, will be pumped into the sewer despite there being backwater.

Self-diagnosis system

The system has a plug-in ready Comfort control unit with the SDS self-diagnosis system, a display for showing the operating status and maintenance information as well as a connection option for centralised control systems. It can be connected without the need for an electrician.

Staufix FKA automatic backwater valve

Floor slab installation

  Type of coverNominal size (DN)LengthWidthBackwater protection Item no.  
84100X tileable cover plate 100 642  mm 590  mm Type 3 84100X
84125X tileable cover plate 125 645  mm 590  mm Type 3 84125X
84150X tileable cover plate 150 656  mm 590  mm Type 3 84150X
84200X tileable cover plate 200 720  mm 590  mm Type 3 84200X

  Type of coverNominal size (DN)LengthWidthBackwater protection Item no.  
84100S Cover plate 100 642  mm 590  mm Type 3 84100S
84125S Cover plate 125 645  mm 590  mm Type 3 84125S
84150S Cover plate 150 656  mm 590  mm Type 3 84150S
84200S Cover plate 200 720  mm 590  mm Type 3 84200S

Installation in an exposed drainage pipe

  Nominal size (DN)LengthWidthBackwater protection Item no.  
84100 100 642  mm 350  mm Type 3 84100
84125 125 645  mm 350  mm Type 3 84125
84150 150 656  mm 350  mm Type 3 84150
84200 200 720  mm 350  mm Type 3 84200

Not found the right product?

In addition to our standardbackwater valves, we develop individual solutions for special requirements – in terms of form, function and dimensioning – at the customer's request.. 

Individual solutions