Which statement about full port ball valves is true?

Which statement about full port ball valves is true?

• A. It has the same bore size as the pipe
• B. It reduces the bore size
• C. It increases pressure drop
• D. It is used only for high pressure

Answer: (A)

Full port ball valves are designed so that the bore inside the valve matches the pipe’s internal diameter. When the valve is open, the flow path is essentially the same as the pipe, so there’s no throttling caused by the valve itself. That’s why this statement is true: the bore size is the same as the pipe. Because the flow isn’t restricted by the valve, the pressure drop across a full port ball valve is minimized compared with valves that have a reduced bore. It isn’t limited to high-pressure applications; full-port valves come in various pressure ratings, chosen when full flow is needed. The other statements describe reduced-bore behavior or misinterpret the role of the valve in pressure drop.

Full port ball valves are designed so that the bore inside the valve matches the pipe’s internal diameter. When the valve is open, the flow path is essentially the same as the pipe, so there’s no throttling caused by the valve itself. That’s why this statement is true: the bore size is the same as the pipe.

Because the flow isn’t restricted by the valve, the pressure drop across a full port ball valve is minimized compared with valves that have a reduced bore. It isn’t limited to high-pressure applications; full-port valves come in various pressure ratings, chosen when full flow is needed. The other statements describe reduced-bore behavior or misinterpret the role of the valve in pressure drop.