Can the flow rate be adjusted continuously or only in specific steps?

Based on the information provided, the flow rates of this high - pressure fire nozzle are given in specific values at different pressures (e.g., 35 - 60 - 80 - 85 LPM at 6 bar and 80 - 135 - 180 - 200 LPM at 40 bar). This indicates that the flow rate is likely adjusted in specific steps rather than continuously. While this may seem to limit the precision of flow rate adjustment compared to a continuously variable system, it still provides firefighters with a range of options to choose from according to the specific requirements of the firefighting situation.

For example, in a small - scale fire where a relatively low and controlled flow rate is sufficient, they can select one of the lower values in the range. In a more intense fire situation that demands a higher volume of water, they can switch to a higher step in the flow rate range. The selectable flow feature, even with step - wise adjustments, offers flexibility in firefighting operations, allowing firefighters to adapt their water usage to the nature and scale of the fire, and to optimize the effectiveness of their firefighting efforts while also conserving water resources when appropriate.