Segment Ball Valve is quarter turn control valve mainly recommended for throttle service, segment ball valve combines globe valve control with the efficiency of a rotary ball valve. Segment ball is in V-notch design with strong cutting force and self-cleanness, especially suitable for control of medium containing fiber and tiny solids. Segment ball valve was from pulp and paper industry. By research and development, segment ball valve is extend to other industrial such as petrochemical, petroleum, chemical fiber, power, metallurgy, pharmacy, environmental protection etc.