The main part of the ball valve is ball which has a hole in middle. When that ball rotate 90 degree it close or open. They are useful for applications which have to be rapid.
Advantages;
Minimal loss of pressure
Easy to opening and closing
Good leak tightness
Compact design
They tested with water test under 10 bar pressure.
Actuators can assembly easily.
They tested with water test under 10 bar pressure
