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Staufix backwater valve

The original solution for wastewater.

You can't improve on an original. But we can. The new Staufix backwater valve is the result of decades of product development and optimisation. It is just as safe as the original Staufix, but now even more compact, allowing a simpler installation and more flexible mounting.

The Staufix backwater valve 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

Staufix backwater valve

At KESSEL, we are also constantly putting our products to the test. In addition to product quality, the focus is also on functionality and simple installation. For example, we have made the well-known Staufix backwater valve even more compact and easy-to-install.

Installation situation

The Staufix and StaufixControl backwater valves can be installed either in an exposed drainage pipe or in the floor slab – convenient and tidy thanks to the installation kit with a vertically adjustable upper section. Even installation in waterproof concrete is possible by means of an extension piece with flange and an elastomer waterproofing membrane.

Tool-free maintenance

With the one-handed closure, the cover is particularly easy to open and close ­– for convenient maintenance, with absolutely no tools required.

Staufix backwater valve Type 1


Floor slab installation

  Type of coverNominal size (DN)LengthWidthBackwater protection Item no.  
720090.10S Cover plate 90 444  mm 444  mm Type 1 720090.10S
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720100.10S Cover plate 100 444  mm 444  mm Type 1 720100.10S
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720125.10S Cover plate 125 511  mm 444  mm Type 1 720125.10S
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720150.10S Cover plate 150 523  mm 444  mm Type 1 720150.10S
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720200.10S Cover plate 200 586  mm 444  mm Type 1 720200.10S
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  Type of coverNominal size (DN)LengthWidthBackwater protection Item no.  
720090.10X tileable cover plate 90 444  mm 444  mm Type 1 720090.10X
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720100.10X tileable cover plate 100 444  mm 444  mm Type 1 720100.10X
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720125.10X tileable cover plate 125 511  mm 444  mm Type 1 720125.10X
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720150.10X tileable cover plate 150 526  mm 444  mm Type 1 720150.10X
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720200.10X tileable cover plate 200 586  mm 444  mm Type 1 720200.10X
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Installation in an exposed drainage pipe

  Nominal size (DN)LengthWidthBackwater protection Item no.  
720090 90 385  mm 167  mm Type 1 720090
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720100 100 389  mm 167  mm Type 1 720100
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720125 125 511  mm 216  mm Type 1 720125
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720150 150 523  mm 216  mm Type 1 720150
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720200 200 586  mm 233  mm Type 1 720200
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Staufix backwater valve Type 2


Floor slab installation

  Nominal size (DN)LengthWidthBackwater protectionStainless steel flap as rat protection Item no.  
730090.10S 90 444  mm 444  mm Type 2 no 730090.10S
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730090.10SR 90 444  mm 444  mm Type 2 yes 730090.10SR
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730100.10S 100 444  mm 444  mm Type 2 no 730100.10S
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730100.10SR 100 444  mm 444  mm Type 2 yes 730100.10SR
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730125.10S 125 511  mm 444  mm Type 2 no 730125.10S
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730125.10SR
125 511  mm 444  mm Type 2 yes 730125.10SR
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730150.10S 150 523  mm 444  mm Type 2 no 730150.10S
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730150.10SR 150 523  mm 444  mm Type 2 yes 730150.10SR
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730200.10S 200 586  mm 444  mm Type 2 no 730200.10S
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730200.10SR 200 586  mm 444  mm Type 2 yes 730200.10SR
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  Nominal size (DN)LengthWidthBackwater protectionStainless steel flap as rat protection Item no.  
730090.10X 90 444  mm 444  mm Type 2 no 730090.10X
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730090.10XR 90 444  mm 444  mm Type 2 yes 730090.10XR
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730100.10X 100 444  mm 444  mm Type 2 no 730100.10X
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730100.10XR 100 444  mm 444  mm Type 2 yes 730100.10XR
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730125.10X 125 511  mm 444  mm Type 2 no 730125.10X
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730125.10XR 125 511  mm 444  mm Type 2 yes 730125.10XR
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730150.10X 150 523  mm 444  mm Type 2 no 730150.10X
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730150.10XR 150 523  mm 444  mm Type 2 yes 730150.10XR
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730200.10X 200 586  mm 444  mm Type 2 no 730200.10X
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730200.10XR 200 586  mm 444  mm Type 2 yes 730200.10XR
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Installation in an exposed drainage pipe

  Nominal size (DN)LengthWidthBackwater protectionStainless steel flap as rat protection Item no.  
730090 90 385  mm 167  mm Type 2 no 730090
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730090R 90 385  mm 167  mm Type 2 yes 730090R
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730100 100 389  mm 167  mm Type 2 no 730100
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730100R 100 389  mm 167  mm Type 2 yes 730100R
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730125 125 511  mm 216  mm Type 2 no 730125
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730125R 125 515  mm 214  mm Type 2 yes 730125R
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730150 150 526  mm 214  mm Type 2 no 730150
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730150R 150 523  mm 216  mm Type 2 yes 730150R
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730200 200 586  mm 233  mm Type 2 no 730200
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730200R 200 586  mm 233  mm Type 2 yes 730200R
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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