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Sewage valves to protect against backwater from the sewage system

  • Backwater valves
  • Wastewater Valves
Sewage valves from the manufacturer to protect against backwater from the sewer system, to protect against insects and small animals from sewer systems and to protect against odours from sewer gases.

Valves for waste water to protect against backwater

Our Stop Silent SL13 valve (by Lasso Technik AG) is the optimal protection against water backflow. This valve for wastewater and rainwater is characterized by its ease of installation in industrial and private water systems. In addition, quick assembly in inspection shafts or evacuation pipes is ensured by a friction clamp inside the pipe. The check valve is ideally suited for back pressure up to 0.5 bar. The Stop Silent SL13 water valve can also be used as a nose flap (anti-frog) by preventing small animals from entering the pipe network. In order to prevent any gas from escaping from the cellar, this valve is also equipped with an airtight odour check valve.

Stop Silent SL13 waste water valves and their advantages

  • Waste water valve for preventing odour nuisance from the waste water system
  • Nose flap (anti-frog) to prevent small animals from entering the pipes
  • Reliable and durable protection against backflow of water
  • Simple and quick installation in pipes or inspection shafts without additional work

Functionality of our waste water valves

With an accumulation of wastewater, our backwater valve exerts pressure on the Stop Silent SL13 Membrane. The membrane opens its sealing lip upwards and releases the flow for the waste water. When the wastewater flow is stopped, the sealing lip is closed and the wastewater valve closes. In order to prevent sewage gases from escaping from the cellar, for example, the rubber membrane is filled and pressed against the pipe wall during the backflow.

Installation sizes of our waste water valves

Our Stop Silent SL13 waste water valves are available in the following installation sizes.

Inner pipe diameter:

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

Application examples of our waste water valves

Our waste water valves have a wide range of applications.

  • house connection
  • sewer pipes
  • sewage connection
  • sewer systems
  • faecal effluent
  • Flood protection during floods
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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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+41 61 331 40 90
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