Ball Valve Manufacturer in USA SVR Global is the top Ball valve manufacturer in USA. A ball valve regulates the flow of fluid (liquid or gas) via a pipeline using a disc with a ball-like shape. When the valve is open, the fluid can travel through a hole in the centre of the ball. When the valve is closed, the ball rotates 90 degrees, restricting the fluid flow completely by making the hole perpendicular to the flow. Ball...