A ball valve controls flow with a hollow sphere that has a bore through its center. Turning the handle a quarter turn aligns the bore with the pipeline — fluid flows freely. Rotate it 90° and the solid side blocks the flow with a tight seal.

• Open or closed in one second. One lever rotation does it all: handle parallel to the pipe = open, perpendicular = closed.
• Leak-free even after years of inactivity. Ring seats (typically PTFE) ensure a tight seal under high pressure and after long idle periods.
• Built for on/off, not throttling. In the fully open position, the bore matches the pipe diameter — zero pressure drop, maximum efficiency.