Fernco 160mm Back Water Valve - Double Flap

Protect your property from backflow flooding, water damage, and rodent infestations with Fernco's 160mm In-Line Backwater Valve (Double Flap). Also referred to as a Non-Return Valve (NRV), this high-quality, maintenance-free solution prevents reverse flow in your sewer and stormwater systems, ensuring foul water stays out of your property. Ideal for use with 110mm underground sewer drainage pipe, Fernco’s 160mm BWV offers a robust and effective safeguard for your drainage system.

Why Choose Fernco’s 160mm In-Line Backwater Valve (Double Valve)?

• Effortless Installation
   The BWV is designed for quick and easy installation into your existing 160mm underground sewer drainage pipe. Using a shear-banded or Icon coupling, it can be securely connected without the need for specialist tools or major modifications.
• Flood Prevention
   This backwater double valve provides an enhanced physical barrier against backflow, preventing sewer or stormwater from flowing back into your property. Protect your home or business from internal flooding through toilets, plug holes, and waste pipes during extreme weather or blockage.
   The flaps are designed to open freely, enabling the smooth flow of wastewater in the direction of the rainwater drain’s slope while preventing water from reversing in flood situations.
• Rodent and Pest Deterrent
   Equipped with a stainless steel anti-flooding flap, the BWV prevents pests such as rats and other rodents from entering your property through the drainage system. It also helps block insects and other vermin, making it a reliable dual-purpose solution.
• Maintenance-Free with Robust Design
   Once installed, Fernco’s 160mm BWV requires no upkeep, ensuring a long-lasting and reliable flood protection system. Its self-activating mechanism operates automatically, offering peace of mind without the need for manual intervention.
   The valve’s durable body design minimises the risk of solid waste accumulating, reducing the chances of blockages and ensuring continuous performance.
• Removable Lid for Inspection & Locking Mechanism
   For added convenience, the BWV features a removable lid, allowing for easy inspection and cleaning if necessary. Additionally, it includes a secure locking mechanism, ensuring enhanced protection and control when needed.

What is a Backwater Valve (BWV)?

A Backwater Valve (BWV), also known as a Non-Return Valve (NRV), is a critical component in drainage systems, allowing wastewater to flow in one direction while automatically closing to prevent backflow during floods or sewer surges. Acting as a physical barrier between your property and the public sewer, it also helps prevent foul smells and harmful pathogens from traveling back up the drainage system. 

Trusted by Experts

Formerly known as Flexseal, Fernco is a leading name in drainage, water management and flood prevention solutions. With Fernco's In-Line Backwater Valves, you can be assured of superior protection against backflow, flooding, and pest infestations.

Fernco’s BWV complies with BS EN 13564 guidelines, ensuring it meets the highest industry standards for drainage and flood prevention systems.

Part H Building Regulations 2.11

Anti-flooding valves should preferably be of the double valve type, and should be suitable for foul water and have a manual closure device. They should comply with the requirements of prEN 13564. A single valve should not normally serve more than one building. A notice should be provided inside the building to indicate that the system is drained through such a valve. This notice should also indicate the location of any manual override, and include advice on necessary maintenance

Keep your property dry, secure, and safeguarded from backflow and pests with Fernco's In-Line Backwater Valves  – the ultimate flood prevention solution for homes and businesses.