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https://www.haiyingvalve.com/products/cast-iron-flange-connection-ball-valve.html          
Ball Valve Flange Type
A ball valve                flange type is a type of quarter-turn valve that uses a ball-shaped component to control the flow of fluid. It has two flanges, one on each end, for connecting to pipes or other equipment, providing a tight seal to prevent leaks. Flanged ball valves are commonly used in industrial, commercial, and residential plumbing systems for controlling the flow of liquids, gases, and slurries. They are durable, easy to operate, and can withstand high pressures and temperatures.     
 
This type Ball Valve is a valve, whose disc, the movable part to stop the flow, is a circular ball. When pressure is pushed out on the ball, it is moved off its disc allowing fluid to pass through the inside. When the fluid pressure decreases, the ball slides back into its position on the inside disc. But This Ball valves               are only used in liquid systems and can be produced in GG25, GG40 at HY Valves scope.
 

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