Hydraulic butterfly valves are a type of check valve, which automatically open and close based on the weight of the door leaf and the pressure difference between the inside and outside of the valve. They offer excellent water stop and anti-backflow performance, are highly corrosion-resistant, and are easy to install and manage.

Hydraulic butterfly valves are suitable for use in various channels, riverbank drainage outlets, and for preventing backflow in water supply and wastewater treatment projects. They are exclusively used for rectangular channel outlets with unidirectional water flow.