Which valve is used on large pump intakes and incorporates a flat baffle that turns 90 degrees, operated by a quarter-turn handle?

Which valve is used on large pump intakes and incorporates a flat baffle that turns 90 degrees, operated by a quarter-turn handle?

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

Answer: (A)

Butterfly valve. The defining feature is a flat disk (the baffle) mounted in the center of the pipe. When you turn the stem, the disk rotates 90 degrees: it sits parallel to the flow to open, then turns perpendicular to flow to close. A quarter-turn handle provides quick, simple operation, which is especially useful for large pump intakes where you want fast control and a clean bore. This compact, lightweight design also handles large diameters well, making it the common choice for intake applications. The other valve types don’t fit this description: gate valves move a gate with more travel and aren’t a quick 90-degree action; ball valves use a spherical ball rather than a flat disk; check valves are non-return devices and aren’t operated with a manual quarter-turn handle.

Butterfly valve. The defining feature is a flat disk (the baffle) mounted in the center of the pipe. When you turn the stem, the disk rotates 90 degrees: it sits parallel to the flow to open, then turns perpendicular to flow to close. A quarter-turn handle provides quick, simple operation, which is especially useful for large pump intakes where you want fast control and a clean bore. This compact, lightweight design also handles large diameters well, making it the common choice for intake applications. The other valve types don’t fit this description: gate valves move a gate with more travel and aren’t a quick 90-degree action; ball valves use a spherical ball rather than a flat disk; check valves are non-return devices and aren’t operated with a manual quarter-turn handle.