Which valve is used in pumper discharge and gated wyes and is open when the handle is in line with the hose?

Which valve is used in pumper discharge and gated wyes and is open when the handle is in line with the hose?

• A. Ball Valve
• B. Gate Valve
• C. Butterfly Valve
• D. Check Valve

Answer: (A)

In pumper discharge and gated wyes, the valve that is open when the handle is aligned with the hose is the ball valve. A ball valve uses a spherical ball with a bore. When the lever is in line with the hose, the bore lines up with the piping, allowing flow; a 90-degree turn shuts it off. This quick, quarter-turn action gives fast, positive shutoff, which is ideal for fire pumps where you need to control flow efficiently and reliably. Gate valves require multiple turns to open or close and aren’t as quick to operate, making them less suited for rapid changes in discharge lines. Butterfly valves and check valves serve different purposes or configurations and don’t match the specific line-aligned-open behavior described.

In pumper discharge and gated wyes, the valve that is open when the handle is aligned with the hose is the ball valve. A ball valve uses a spherical ball with a bore. When the lever is in line with the hose, the bore lines up with the piping, allowing flow; a 90-degree turn shuts it off. This quick, quarter-turn action gives fast, positive shutoff, which is ideal for fire pumps where you need to control flow efficiently and reliably.

Gate valves require multiple turns to open or close and aren’t as quick to operate, making them less suited for rapid changes in discharge lines. Butterfly valves and check valves serve different purposes or configurations and don’t match the specific line-aligned-open behavior described.