What is a smooth bore nozzle and when is it typically used?

• A. It is used for spray patterns.
• B. A smooth bore nozzle produces a fog pattern.
• C. A smooth bore nozzle requires very high nozzle pressure.
• D. A smooth bore nozzle gives a solid, round jet and is typically used for long reach and high-velocity streams with lower flow rates.

Answer: (D)

A smooth bore nozzle is designed to deliver a solid, round jet rather than a spray or fog. Because the water exits through a single smooth passage without breakup, the jet stays coherent and travels farther before it starts to spread. That concentrated stream gives higher reach and higher exit velocity for a given pressure, typically at lower flow rates. So it’s used when you need to send water a long distance with enough velocity to reach distant targets or to cut through resistance, rather than to blanket an area with spray. The other statements don’t fit because a smooth bore doesn’t produce a spray or fog, and while pressure helps, the defining feature is the solid jet and its suitability for long-reach, high-velocity streams with lower flow.