SEV Hydro-power ball valve is used in hydro-power station, installed at the inlet of the turbine spiral case or bifurcated pipe, or water supply network to control the water flow shut-off and open. The mainly function as follows: 

1. Provide safe working conditions for maintenance; 

2. Reduce the water leakage when the unit shut down for a long time, and shorten the flushing time when the unit starts up; 

3. Prevent unit runaway. 

The hydro-power ball valve is composed by the valve part and drive control part, by-pass pipeline, expansion joint and other components. SEV can be equipped with PLC electrical control box, control cabinet, oil pressure device and other accessories according to customer needs.