Shanghai Weiwang Technology

The backwater valve is a crucial flood control facility designed to prevent floodwaters from flowing back into buildings through drainage pipes, thereby effectively safeguarding buildings and assets. It can automatically open and close based on the flow direction of the water. When the external water level is higher than the internal level, the valve automatically closes to prevent flooding. Conversely, when the internal water level is higher than the external level, the valve opens to allow water to drain out. It is suitable for various buildings prone to flooding, such as underground garages, basements, and drainage pump stations, significantly enhancing a building’s flood control capability.