Solution

Flood protection

Protect properties, infrastructure and water and wastewater systems from backflow and flooding during high water levels and heavy rainfall.

A flood can quickly have serious consequences

Heavy rainfall, high water levels and overloaded pipe networks can cause backflow and flooding in stormwater and wastewater systems. When water can no longer drain away or begins to flow back through the system, the risk of damage to properties, infrastructure and other vulnerable areas increases.

Effective flood protection prevents backflow while allowing water to flow in the intended direction under normal conditions. Our check valves and other flood protection solutions protect vulnerable parts of stormwater and wastewater systems – and, in turn, the people, properties and communities affected when these systems fail to function as intended. The solutions can be used in both new and existing installations.

Which solution is right for flood protection?

The right flood protection solution depends on where backflow needs to be prevented, the type of water being handled and the installation conditions.

WaStop Inline Check valve protects stormwater pipes against backflow and can be installed in both new and existing systems. The flexible membrane opens to allow water to flow in the intended direction and closes automatically when water attempts to flow back.

WaBack Non-return chamber is suitable for wastewater and stormwater systems where free flow and the ability to handle heavily contaminated water are important requirements. The valve is normally open and closes automatically in the event of backflow.

WaFlap Flap valve provides automatic backflow protection in stormwater and wastewater systems, for example in upstream chambers. The flap opens when water flows in the intended direction and closes when the flow stops or water pushes back from the opposite direction.

Read more about the products below or contact us for help with product selection and sizing.

Our solutions

  • WaStop® inline non-return valve shown in cutaway with its internal rubber membrane

    WaStop®Inline Check valve

  • Cutaway of WaBack® non-return chamber with closed flap holding back water

    WaBack® Non-return chamber

  • WaFlap™ KVR flap valve for outfalls and drainage pipes

    WaFlap™ Flap Valve

  • Case

    The largest WaStop Non-Return Valve ever installed in Finland

    With the consulting engineering office contacting Wapro’s business partner in Finland, Ulefos Oy to find a solution, a teams meeting was setup with Wapro to discuss possible solutions. In the end, a customized WaStop DN1600 with bell-bolt installation was decided to be the best option for the application. With the bell-bolt option, the contractor could install WaStop above ground in the new DN1600 stainless-steel pipe instead of having to conduct the installation process of the valve at the outfall-site.

    The DN1600 stainless steel pipe with the WaStop pre-installed was then lowered in place to connect to the upstream inspection chamber with ease.

    The WaStop will ensure an effective evacuation of the stormwater with the lowest head loss amongst inline-check valves on the market and will help protect this beautiful area of Helsinki from flooding in the future.

    WaStop DN1600 unit prepared for installation as flood protection in Helsinki
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