Abstract: A quarter turn cast iron ball valve where the ball inside is cast of metal, solid or hollow, and forms a cylinder or tube across the inside. This tube is "open" on both ends so that when the ball is seated and turned to its open position there is a diametrically extended flow passage allowing the fluid to flow through the valve. The ball is covered with "Teflon" on the periphery of the ball as well as on the inside periphery of the tube. The gland plate has a locking mechanism which enables the valve to be quickly set to a desired position on a permanent basis and be locked in either the full, opened or closed position.