Flap valves are important to prevent reverse flow of water into holding structures, protecting water assets from contamination, animal ingress and flooding. The Drinking Water Inspectorate (DWI) recommends that flap valves should be installed on all drainage and overflow routes and inspected every six months.
Stonbury is pleased to assist its clients in the inspection, installation and maintenance of flap valves and their associated outfall structures, deploying teams which are specially trained to work in confined spaces and riverine and tidal environments.
Identification and inspection
Outfall pipework is often situated in difficult-to-access locations and is frequently obscured by silt and vegetation. Stonbury is pleased to assist clients to carry out investigatory works to identify the locations of pipework and existing valves, along with the following services:
Stonbury takes preservation of the environment seriously and has teams that are trained in the protection of sensitive habitats such as nesting wildfowl and are educated in rare and invasive plant species.
Installation, repair, and maintenance
Once accessible, Stonbury provides the following services, installing flap valves in a range of sizes and materials to suit the environment and client specification.
In addition to the above services, Stonbury improves or installs access to allow regular valve functionality inspections. Examples include: