Since
1942
Backwater valves
Wastewater Fittings
Wastewater Technology
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Check Valve
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Stop Silent Light
Information document
Case studies, checklist, installation instructions
Flap valve - Keep vermin out
Small animals entering pipe systems. An annoying problem, which is reliably and permanently eliminated with a Stop Silent Light backwater protection.
To know before installing Stop Silent Light
To order the right product, it is important to tell us the size (internal diameter) of the pipe to be secured.
Invitation to tender text
The Stop Silent Light backflow preventer consists of a high-quality elastomeric membrane. This membrane is shaped for an optimal flow as well as for a safe absorption of the back pressure.
Wartung Rückstauklappe
Active backwater protection
Cellar under water? Avoid costly renovations of damaged premises.
Bad smells
As the check valve diaphragm is constantly closed, it provides a reliable seal against bad odours that try to circulate in pipes.
Avoid flooding of streets
Protect your pipes from sewer backups to prevent street flooding.
Installation guide
Stop Silent Light can be installed both at the inlet and outlet of the inspection shaft.
Mounting Instructions-Adapter
Adapters can be supplied for intermediate dimensions.
Stop Silent
Exemples of application
Some examples where Stop Silent check-valves are in use: Water supply Zürich is one of them.
Stainless steel cone & rubber diaphragm
Hard shell, soft core, stainless steel valve cone and high-quality rubber diaphragm: the harmonious interaction of the two components of Stop Silent.
Multi-cone valve
Efficient production of cold water with minimum pressure loss.
Case studies: reservoirs
Visiting the pumping station of the largest freshwater source in Basel-Landschaft (Switzerland) for the installation of a Stop Silent valve.
Information document
Features: Valve to prevent backflow of liquid and gaseous media.