110mm Non Returnable In-line Single Flap Backwater Valve

In-line Backwater Valve (BWV)
Flexseal’s range of In-line Backwater Valves (BWV’s) support the flood prevention methods used in the installation of new drainage systems.

Automatically operated and maintenance free, providing free flow of sewer or surface water materials.

Available in a range of sizes to accommodate the most common smooth PVC pipe sizes: 110mm, 160mm and 200mm.

Here are some of the benefits:

Easy to install
Maintenance free
Removable lid for inspection
Easy to operate locking mechanism
Robust design and materials
Protects against back flow and pests, such as rats and other rodents
Stainless steel flaps as standard
A range suitable for stormwater and sewer applications
Complies with the guidelines set out in BS EN 13564