For simple retrofit installation into existing manholes
To prevent foul water flowing back from the blocked sewerage system to flood the property from the inside via toilets, plug holes and waste pipes.
A range of single-flap and double-flap valves for installation onto sewerage pipes
Protect buildings against backwater flooding due to rainwater travelling back up the sewerage system.
A range of grp flap valves designed for ease of installation due to their low weight but with exceptional mechanical strength and durability.