What is the water flow and pressure when deploying each hose pack?

The correct answer indicates that when deploying each hose pack, the flow rate is set at 23 gallons per minute (GPM) with a pressure of 110 pounds per square inch (PSI). This combination is likely established by fire service standards to provide an effective balance between adequate water flow for extinguishing fires and manageable pressure that firefighters can work with safely and efficiently.

Maintaining a specific flow rate and pressure is essential for ensuring that the hose can deliver water effectively to combat fires while also allowing firefighters to maintain control during operation. The choice of 23 GPM at 110 PSI may have been determined by considering the types of fires typically encountered, the effective reach of water, and the necessary force to penetrate any obstructions that may be present.

The other options represent various combinations of flow and pressure that may not be as effective or manageable for standard operations, which can lead to either insufficient water supply for fire suppression or challenges with handling the hose during deployment. Understanding these optimal parameters is crucial for safety and efficiency in firefighting operations.