Reliable backflow prevention in building drainage for installation to EN 13564-1:2002
The Stop Silent Light valve seals directly to the pipe wall in minutes. Its light-weight simple design means that the valve can be easily installed into existing pipes. Once the valve is expanded into place, the smooth rubber membrane is the only moving part. This means that the Stop Silent Light valve is durable and maintenance-free.The Stop Silent Light valve acts as a barrier to stop the movement of rodents and insects. Its airtight seal prevents smells from exiting the drainage system .
The SSL valve can be installed from both sides, either in the inlet or outlet of the access chamber or manhole.
Installation in the outlet is of a manhole or chamber is usually preferred as this will prevent the manhole from being surcharged from the public sewer.
The SSL valve is ideal for fitting to existing drainage and sealing the perimetel of commercial property.
Due to a slight build-up of water, a small pressure is exerted on the diaphragm, which then opens upwards. If the flow stops, the sealing lip restores and closes the valve. In back pressure, the rubber membrane is filled and pressed against the pipe wall.
This function makes the gas movement impossible and helps to prevent the stench of the sewer gases from escaping into the basement. It also allows solids to pass through easily as in the video above.
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