Fernco In-line Backwater Valve - 110mm

Name: Fernco In-line Backwater Valve - 110mm
Brand: Fernco
SKU: z56ewfd2be
Price: 134.10 GBP
Availability: InStock

The Fernco In-line Backwater Valve provides automatic flood prevention for new drainage system ins...

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Fernco 110mm In-line Backwater Valve with Stainless Steel Flaps for Sewer and Drainage Systems

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Product Information

Full details

The Fernco In-line Backwater Valve is an essential solution for homeowners and contractors seeking automated flood protection for new drainage system installations. By allowing free flow of water while blocking sewage backflow and pest intrusion, it provides significant peace of mind for both residential and commercial properties; however, it is specifically optimized for new installations rather than retrofitting into existing, constrained pipework.

All features

Model Part Number	BWV110-1
Brand	Fernco

Extended Product Information

FAQs

Is this valve suitable for both indoor and outdoor use?

Yes, it is suitable for both residential and commercial applications in either sewer or stormwater systems.

Can I use this for retrofitting an old pipe?

This valve is designed primarily for new drainage system installations and may require significant pipe modification if used for retrofitting.

Does it require electricity?

No, the Fernco In-line Backwater Valve is a purely mechanical device that operates automatically based on water flow pressure.

Will this keep rats out?

Yes, the robust stainless steel flap is designed to effectively prevent rodent ingress while still allowing water to pass through.

What size pipe does this fit?

This model is specifically designed for 110mm diameter drainage pipes.

What is the benefit of the red-orange finish?

The high-visibility color helps installers and maintenance crews locate the valve easily when it is buried or hidden within a drainage run.

Troubleshooting

Water is not flowing through the valve

Check if the valve was installed in the correct flow direction. Ensure the internal flap is not obstructed by construction debris.

Valve cover is difficult to remove

Ensure the locking mechanism is fully disengaged and clean any surrounding soil or grit from the threads before attempting to unscrew.

Pros and Cons

Pros

Automatic, maintenance-free operation
Effective physical barrier against rodents
Easy access for inspection via removable lid
High-visibility color for identification in soil
Compliant with international safety standards

Cons

Primarily designed for new drainage installations
Requires proper orientation for correct functionality
Not suitable for use in high-pressure pressurized sewer lines

Setup, Compatibility & Care

To ensure proper function, the valve must be installed in a horizontal orientation with the flow arrow pointing in the direction of the drainage discharge. The high-visibility red-orange finish assists in locating the valve during subsequent landscaping or maintenance phases. Regular maintenance involves simply unscrewing the lid to inspect the stainless steel flap for debris or build-up. Ensure that the seal is seated correctly when replacing the lid to maintain a watertight connection. This unit is fully compatible with standard 110mm drainage piping commonly found in modern construction.