The term "backwater" describes a phenomenon that occurs when more water is temporarily discharged into the sewer system than it can “handle”. This can happen, for example, during heavy rain or flooding (sewer blockage). The sewage level then rises within the sewer system and inexorably escapes wherever it can – i.e. from manhole covers and, in the worst-case scenario, the drains, washbasins and toilet in your basement.
Drainage system without backwater protection:
During heavy rain, the water level rises above the so-called backwater level. This term is typically used to mean street level. Rooms in the basement or cellar quickly become flooded. This results in significant damage and costs.
Drainage system with backwater protection:
Wastewater that flows with a slope to the sewer will be protected by a backwater valve. In the event of backwater, the flap closes so that no wastewater can enter the building.If the public sewer is higher than the drainage point in the building, the wastewater must be pumped above the backwater level via a lifting station.
Irrespective of whether you are dealing with the disposal of wastewater with or without sewage, this can have an impact onthe functionality and operational safety of backwater valves. Before you decide on a product, you need to ask yourself the following question: For which sanitary appliances should theproduct provide drainage? The decisive factor is always the type of wastewater that drains into the sewer via the backwater valve in the direction of flow.
The renovation of an old building, stylishly integrated in the new building, directly installed in the building or outside in a building connection chamber: Backwater valves can be installed in different locations depending on the individual situation on site. Simply select the most appropriate solution for you from the different versions.
The cost-effective, clean and standard-compliant solution for the retrofitting of backwater systems – ideal for the renovation of old buildings prone to backwater. To avoid the complete drainage pipes having to be rerouted in expensive construction work, we recommend installing the central backwater protection system in the existing exposed drainage pipe. This guarantees free access to the backwater system for maintenance work and pipe cleaning.
Floor slab installation
The convenient, practical and visually appealing version for new buildings creates additional living space at basement level – with toilets, showers or washing facilities. The backwater protection system is installed concealed in the floor. The easy-to-install set, complete with an individual cover that can be tiled, can be used with a wide range of different interior styles and trends. Whether the room in question is a music room, home office or sauna and spa.
Installation in the ground in front of the building
Up until now, products protecting against water penetration have mainly been installed inside buildings. In the meantime, however, new methods are available. A house connection chamber module with an integrated backwater valve is installed in front of the building for this purpose. Depending on the type of wastewater (black water or grey water), the right backwater system can be retrofitted at any time, for example, if the use of space at basement level changes. This means that building owners and operators can always feel secure.
Protects in the event of backwater
The backwater flap prevents wastewater from the sewer entering the building.
Disposes in the event of backwater
Despite backwater from the sewer and a closed flap, domestic wastewater can be disposed of via a pump. This ensures that the drainage system would remain functionally capable.
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