Since
1942

Backwater valves for retrofitting in flood protection

Backwater flaps from the manufacturer for the domestic waste water connection with multiple functions.

Our backwater flaps for protection against road flooding

Our Stop Silent Light backwater valves can be installed in existing drainage pipes and inspection shafts by a simple force-locking clamping. This backwater valve acts as a reliable backwater protection for all applications in both industrial and private sewage systems and is specified with a backpressure of up to 0.5 bar. Our backwater flaps can also be used as frog and other small animal flaps. Furthermore, the backwater flap prevents unpleasant odours from stepping into your property thanks to the airtight membrane of the valve.

Make sure that the pipes are protected against sewer backups to prevent road flooding.

In our regions, there may be periods of heavy rainfall. However, heavy rains and blocked or partially blocked pipes can cause sewage and stormwater overflows. With the appearance of bad odours and poor hygiene that can cause this problem, such a situation can quickly become unbearable.

However, if the pipe is blocked or partially blocked, an overflow (from the public sewer system) or a return of a pipe to the house may occur. And unfortunately, there are no warning signs of a possible wastewater discharge.

To protect you from any such incident, there is the Stop Silent Light check valve. This reliable and durable solution will give you peace of mind and eliminate the need to worry about pipe backflows.

Discharge is due to a load on the municipal collector that is influenced by severe storms, floods or a heavy and rapid snowmelt.

This phenomenon is often observed along the collectors or near the drain pipes on the separate collectors. In most cases, the unfavourable situation is not known at the time of construction and the valve becomes a backup solution to prevent further flooding.

Prevent the accident and don’t wait for an incident to happen.

Architect designers, design offices, plumbers, construction companies, private individuals and municipalities from all over the world trust us and use the Stop Silent Light system to secure their pipes.

Functionality of our backwater valves

With up to pipe filling of dirty water, pressure is applied on the membrane. This action opens the sealing lip of the membrane upwards and releases the waste water flow. When the wastewater flow stops, the sealing lip lowers again and closes the non-return valve. In the event of a backflow of water, the rubber membrane is filled and pressed against the pipe wall. This function also makes it impossible for the gas to move to prevent unpleasant odours from escaping from the ducts.