The growing number of extreme rainfall events clearly demonstrates the importance of both environmental protection and safeguarding people and infrastructure from large volumes of water. ACO Passavant Detego develops flood- and backflow-resistant manhole covers, as well as sealed surface covers compliant with the German Water Resources Act (WHG).
Manhole covers for sealed surfaces: What to consider in logistics areas and airports
Even sealed surfaces—such as logistics zones, loading areas, and airport grounds—can contain underground manholes with corresponding covers. When installing manhole covers in these environments, two key factors must always be considered:
- Use liquid-tight manhole covers
Only covers that are completely impermeable to liquids should be used on sealed surfaces. These covers must also feature sealing systems that are resistant to hazardous substances typically found in such areas, including fuels, oils, and chemicals. - Choose premium quality products
To ensure long-term durability and environmental safety, opt for high-quality solutions. Manhole covers from ACO Passavant Detego are specifically designed to meet these demanding requirements, offering reliable protection and compliance with environmental standards.
Flood-proof and backflow-resistant manhole covers
Just as our products help protect drinking water and groundwater, they also safeguard infrastructure from water damage—whether from above or below.
Protection from above: Flood-proof manhole covers
Heavy rainfall and flooding can cause water to penetrate through manhole covers, damaging cables and sensitive technical systems below. To prevent this, manhole covers must be flood-proof, meaning they can reliably withstand the water pressure expected from above in extreme weather conditions.
Protection from below: Backflow-resistant manhole covers
Severe rain events and flooding can overwhelm sewer systems, causing water and air to push upward through manholes. To counteract this, manhole covers must be backflow-resistant. This means not only the cover itself but also the surrounding frame must be securely anchored to withstand upward pressure and prevent water ingress.
For maximum safety and reliability, choose ACO Passavant Detego manhole covers—engineered to meet the highest standards in flood and backflow protection.
Waterproof manhole covers for every additional requirement
While watertightness is often the most critical requirement for manhole covers in certain environments, ACO Passavant Detego offers much more. Our covers are designed to meet a wide range of additional demands, including:
- Heavy-duty load capacity
- Fire protection
- Custom options such as opening aids or tailored design features
We also offer a full-service package upon request, which includes professional installation, commissioning, and ongoing maintenance of your manhole covers.
Tailored Solutions for Demanding Conditions
As with all special solutions from ACO Passavant Detego, the same principle applies to covers with high sealing requirements: the better we understand your on-site conditions, the more precisely we can develop the ideal product for your needs. Our experts ask the right questions to guide you to the right solution—one that lets no liquid through and leaves no wish unfulfilled.