Fernco In-line Backwater Valve - 110mm

Name: Fernco In-line Backwater Valve - 110mm
Brand: Fernco
SKU: zjbri2jkxg
Price: 126.74 GBP
Availability: InStock

The Fernco In-line Backwater Valve with double flaps is engineered to provide automatic flood prev...

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Fernco 110mm In-line Backwater Valve with Double Stainless Steel Flaps for Drainage Protection

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Product Information

Full details

The Fernco 110mm In-line Backwater Valve is designed for homeowners and contractors seeking a reliable, automated defense against basement flooding and sewage backup in new drainage installations. It provides the key benefit of automatic flow regulation and pest exclusion without the need for manual intervention; however, it is specifically optimized for 110mm drainage systems and requires proper installation alignment to function effectively as part of a permanent pipe assembly.

All features

Model Part Number	BWV110-2
Brand	Fernco

Extended Product Information

FAQs

Is this valve suitable for both indoor and outdoor use?

Yes, it is suitable for both commercial and residential drainage, provided it is installed in an accessible location on the horizontal sewer run.

Do I need electricity to run this valve?

No, the valve is entirely mechanical and relies on water pressure to operate.

Can I install this on a vertical pipe?

No, this specific in-line valve is designed exclusively for horizontal pipe installations to function correctly.

Will this stop pests like rats?

Yes, the sturdy stainless steel flaps are designed to act as a barrier against rodents moving through sewer lines.

How often should I inspect the valve?

While it is maintenance-free, an annual inspection through the removable lid is recommended to ensure no debris buildup.

Troubleshooting

Water backing up into the house during normal operation

Check the pipe for clogs downstream of the valve or ensure the valve was not installed in reverse flow orientation.

Flap failing to close during a flood simulation

Remove the lid and inspect the hinge area for debris, such as grit or small stones, that may be keeping the flap propped open.

Pros and Cons

Pros

Maintenance-free design suitable for long-term installation
Effective protection against both flooding and pest ingress
Dual-flap redundancy increases overall system safety
Easy access for inspection via the integrated removable lid
Simple, non-electric automatic operation

Cons

Specific to 110mm pipe diameters
Requires professional-grade installation to ensure proper flow direction
Cannot be retrofitted easily in existing systems without pipe cutting

Setup, Compatibility & Care

Installation must be performed by a competent professional to ensure the valve is aligned correctly with the direction of flow, as indicated by markers on the unit housing. The valve is compatible with standard 110mm drainage pipe systems.

Care instructions focus on the inspection port: although the device is largely maintenance-free, property owners should remove the lid periodically (e.g., annually) to ensure that large debris, such as tree roots or construction waste, has not lodged against the flap hinges. Always ensure the locking mechanism is securely fastened after any inspection.