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Waste water technology to prevent the backflow of dirty water

  • Backwater valves
  • Wastewater Technology
Sewage technology from the manufacturer to prevent the backflow of dirty water and as a reliable protection for small animals and vermin in sewer pipes.

Our waste water technology to protect against backwater

In the field of wastewater technology, we have specialized in backflow protection in sewage pipes containing faeces . Our Stop Silent SL13 backflow protection from Lasso Technik AG is suitable for quick and easy installation in industrial and private wastewater applications. It can also be used as a frog flap and as an airtight odor and radon protection flap in wastewater technology. Furthermore, our technology for waste water is ideally suited for installation in drain pipes and inspection chambers with a back pressure of up to 0.5 bar.

Advantages of our SL13 backflow flap

  • Quick and easy to install in drainpipes and inspection chambers
  • Flood protection in the event of flooding
  • Prevents unpleasant odours from the sewage system
  • No ingress of amphibians and insects

How the SL13 works

Our waste water technology exerts pressure on the integrated membrane with an accumulations of waste water media. This membrane in turn opens its sealing lip upwards and releases the flow for the dirty water. To close our special waste water technology, the sealing lip lies down when the waste water flow comes to a standstill. To prevent channel gases from escaping, the built-in rubber membrane is filled in the event of a backwater and thus presses against the pipe wall. As a result, a gas movement is no longer possible.

Nominal size of our backflow flap

Our backflow flaps are available in the following nominal sizes.

Inner pipe diameter:

  • 80 mm
  • 100 mm
  • 110 mm
  • 125 mm
  • 150 mm
  • 200 mm
  • 250 mm
  • 300 mm
  • Larger on request

Examples of the use of our Stop Silent SL13 backflow flaps

Our waste water technology has a wide range of applications.

  • sewer systems
  • sewer pipes
  • sewage connection
  • faecal effluent
  • house connection
  • Backwater protection in the event of flooding
Manufacturer, dealer, service provider
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Stop Silent SL13
Interested ? Do not hesitate to send us all the information we need to process your request more efficiently.
Daniel Rohrer
CEO - Lasso Technik AG
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4059 Basel
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+41 61 331 40 90
lasso@lasso.ch
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