3-piece ball valves can be easier to take apart for cleaning, because the central body section can be removed without disturbing the end connections.
The handle has of this ball valve has a sliding lock mechanism: you have to lift it before you can turn the handle. This will prevent you from accidentally opening a valve by bumping into it.
The inner diameter of the ball valve is 15mm, so it will never restrict your flow!
Material: SS316 stainless steel.