Fernco 110mm Single Flap Backwater Valve
A flooded property can be incredibly stressful, especially when the water is coming back through the drainage system rather than from outside. During periods of heavy rainfall, public sewers can become overloaded, increasing the risk of wastewater flowing back towards homes and buildings. The Fernco 110mm Single Flap Backwater Valve has been designed to help reduce that risk, providing automatic protection without affecting the normal operation of your drainage system.
Installed within a 110mm drainage line, the valve allows wastewater to flow away from your property as normal. If backflow occurs, the stainless steel flap automatically closes, helping to stop contaminated water from travelling back through the drain and into your home or building.
Automatic Protection When You Need It Most
One of the biggest advantages of the Fernco 110mm Single Flap Backwater Valve is that it works completely automatically. There's nothing to switch on, monitor or operate.
During everyday use, wastewater passes freely through the valve with minimal restriction. If the sewer network becomes overwhelmed and water starts flowing in the opposite direction, the flap responds instantly, creating a barrier that helps protect your property from backflow flooding.
It's a simple solution that quietly works in the background, ready to react whenever conditions demand it.
Built for Long-Term Reliability
Fernco has designed the 110mm Single Flap Backwater Valve to cope with the demands of everyday drainage systems. The smooth internal body encourages efficient water flow while helping to reduce the build-up of debris that can lead to blockages over time.
The stainless steel flap is built for durability and also acts as a barrier against rodents, helping to reduce the chance of unwanted pests entering through the drainage system. Once installed, the valve requires very little maintenance, making it a dependable choice for homeowners, builders, drainage contractors and developers.
A Practical Upgrade for Any Drainage System
Whether you're installing a new drainage system or improving the flood resilience of an existing property, fitting a backwater valve is a sensible investment. It provides an extra layer of protection against one of the most common causes of internal flooding and can help prevent expensive repairs, disruption and clean-up costs following periods of heavy rainfall.
Key Features & Benefits
- Designed specifically for 110mm drainage systems.
- Automatically helps prevent backwater flooding during heavy rainfall.
- Ideal for stormwater drainage applications.
- Allows wastewater to flow freely during normal operation.
- Durable stainless steel flap automatically closes during backflow.
- Smooth internal design helps reduce the risk of blockages.
- Helps discourage rodents from entering the drainage system.
- Maintenance-free once installed.
- Quick and straightforward to install.
- Fully tested and compliant with BS EN 13564.
Our Fernco 110mm Single Flap Backwater Valve is one of those products you'll hopefully never have to think about, but when drainage systems come under pressure, you'll be glad it's there. By working automatically to help prevent wastewater flowing back into your property, it provides dependable protection and valuable peace of mind, whatever the weather.