Since
1942

FAQs Stop Silent SL13

The most important questions and answers

How should the StopSilent SL13 be installed?

Insert flush into the pipe and tighten with the supplied allen spanner.
StopSilent SL13 can be installed in the inlet or outlet of the manhole.

Checklist before installation

How is this backwater valve maintained and at what intervals?

We recommend that Stop Silent SL13 be visually inspected for leak tightness 2 times a year and cleaned if necessary.

Does it also work with sewage containing faeces?

Yes, our membranes are suitable for faecal water. They were developed for this

developed for this application.

For wastewater, a minimum slope of 2% is necessary for rainwater 1%.

Difference to competing products?

The backflow preventer functions autonomously, thus does not require a power connection and is closed in the normal state.

Installation and fixing by means of an expander clamp is quick and easy. No additional fixings are required (screws with drill holes).

Without mechanical components, the product is extremely durable.