- Flow regulation and media control
By rotating the angle of the butterfly plate, precise regulation of water flow is achieved and fluid performance is optimised in scenarios such as controlling cooling systems, water intake to turbines, and so on. Butterfly valves can also be adapted to clear water, particulate or corrosive media.
- Rapid shut-off and check protection
Butterfly valves close quickly to shut off the flow of water and prevent backflow in the pipeline. Through the design of fast and slow two-stage closure, it can effectively eliminate the water hammer effect and protect the pipeline system.
- Structural Advantages and Sealing Performance
With triple eccentric metal sealing structure, the butterfly valve can achieve zero leakage, which is suitable for high pressure or demanding sealing scenarios. The compact design saves installation space and is particularly suitable for large diameter pipelines (e.g. water inlet valves).
- Safety and Pressure Management
Butterfly valves indirectly assist in system pressure control by regulating fluid velocity and pressure, reducing energy loss, and at the same time work in concert with safety valves and other equipment to ensure stable pressure in the pipeline network.
In summary, butterfly valves are multi-functional for control, protection and optimisation in hydropower plants, and are one of the key valve types due to their lightweight construction and high opening and closing efficiency.

