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Staufix Ø 50 / 75 backwater valve

The standard-compliant solution in the nominal size of DN 50 or DN 70

The Staufix Ø 50 or Staufix Ø 75 can be used to easily protect individual drainage points such as washbasins, showers or washing machines in rooms below the backwater level against backwater. The Staufix Ø 50 or Ø 75 is installed in the horizontal drainage pipe and can also protect several drainage points.

Thanks to the standard-compliant sizing, they are a guaranteed fit in existing installations, regardless of the manufacturer.

Advantages  Article overview


Areas of application

The backwater valves are versatile in use: They can be installed to provide individual protection for washbasins, showers or washing machines or as a central backwater protection in horizontal drainage pipes.


The Staufix Ø 50 and Staufix Ø 75 small backwater valves are each equipped with two flaps and an emergency closure – and the first standard-compliant backwater double valves for wastewater without sewage according to EN 13564 Type 2. 

Tool-free maintenance

The maintenance and cleaning of the backwater valves is particularly convenient and possible without any tools whatsoever thanks to the quick-release closure.

Staufix Ø 50 / 75 backwater valve

  Installation situationNominal size (DN) Item no.  
73050 exposed drainage pipe 50 73050
73070 exposed drainage pipe 70 73070

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