Solutions

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 check valve in cutaway view showing the internal rubber membrane

    WaStop® Inline Check valve

  • WaBack® check valve chamber cutaway showing the closed flap holding back water

    WaBack® Non-return chamber

  • WaFlap™ KVR flap gate for stormwater outfalls

    WaFlap™ Flap Valve

  • Case

    Protect Mclane Stadium at Baylor University

    To prevent backflow in the pumps, a WaStop Check Valve was installed in each pump. In a football stadium, stormwater is rarely free of debris. Mugs, hot dogs, packaging, and other debris eventually end up in the stormwater system. The designers were impressed by the WaStop’s pulsating flow mechanism, which ensures that no debris gets stuck in the valve and keeps the line clear of sediment both upstream and downstream.

    In addition to the three valves that protect the pumps, there is a fourth WaStop that prevents floodwater from entering the stadium’s drainage system during high tide. Two more WaStops have been installed in the nearby athletics stadium for the same reason.

    Thanks to WaStop’s patented memory membrane and pulsating flow, Baylor University and its fans can relax in the knowledge that the Bears will play no matter what the weather.

    Back of McLane Stadium facing the river, secured with Wapro flood protection system.
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