Level ball valves are a type of valve commonly used in plumbing and fluid control systems to regulate the flow of liquids or gases. They are designed with a spherical ball inside that has a hole through its center. When the valve handle is turned, the ball rotates, aligning the hole with the pipe to allow flow or blocking it to stop flow. The term "level" in this context usually refers to the position of the handle when the valve is open (aligned with the flow path) or closed (perpendicular to the flow path).
