What is the definition of a regulating ball valve? A regulating ball valve is a type of valve used to regulate the flow of fluids or gases. It is a specialized type of ball valve with an internal cavity that houses a floating ball, which is used to control the flow rate. The ball is attached to a stem which is connected to a disc that is rotated to control the flow. The disc can be adjusted to restrict the flow to any desired rate. The regulating ball valve works by allowing a certain amount of flow to pass through when it is open and restricting the flow when it is closed. The amount of flow is determined by the stem position and the size of the opening. It is generally used for controlling the flow of water, steam, air, or other gases. Regulating ball valves are commonly used in industrial applications, such as in HVAC systems, waste water treatment plants, and chemical plants. They are also used in home applications to control the flow of water to a