A ball valve is a durable valve named for the ball inside. The ball is attached to the handle, which is turned. The ball has a hole through it, so when the handle is turned, the hole is lined up with the tube and the valve is opened.

Ball valve manufacturers make different types of ball valves. The four body styles are single body, split body, top entry and welded. There are also four types of ball valves made by ball valve manufacturers.