List of featured suppliers of CISTERN Fill Valves WRAS Approved on Building Products Index
A cistern is a container used to store water, which is typically located underground. Fill valves are devices used to regulate the flow of water into the cistern, ensuring that it remains at an appropriate level. To be WRAS approved, a fill valve must meet the standards set by the Water Regulations Advisory Scheme, which ensures that products used in water supply meet certain health and safety requirements.