Which nozzle type has the highest flow rate?

The master stream nozzle is designed to deliver a significant volume of water, making it the type with the highest flow rate. These nozzles are typically used for large-scale firefighting operations and can deliver large quantities of water quickly, ensuring that firefighters can effectively combat intense fires. They can be mounted on apparatus, located on ladders, or used independently, and they are capable of discharging water in streams that can reach considerable distances.

In comparison, smooth bore nozzles also provide a high flow rate but not as extensive as master streams. Fog nozzles, while versatile and capable of producing a range of flow rates, generally provide a lower flow due to their design for creating a misty spray, which is effective for cooling and protection but not primarily for high-volume application. Handheld nozzles offer flexibility and ease of use for firefighters, but their flow rates are limited in comparison to master stream nozzles. This makes the master stream the superior choice for scenarios that demand large volumes of water rapidly.