In the foam system, the nozzle is rated at 125 GPM.

In the foam system, the nozzle is rated at 125 GPM.

• A. False
• B. True
• C. Not specified
• D. It varies

Answer: (B)

In a foam firefighting setup, the nozzle’s flow rating tells you how much foam solution the nozzle is designed to deliver at the system’s nominal discharge pressure. If the nozzle is rated at 125 GPM, that means at the designated pressure for the foam system it will discharge about 125 gallons per minute. This rating is used to size hoses, calculate friction losses, and ensure the foam concentrate is proportioned correctly with water to create the intended foam blanket. The rating is tied to the system’s design conditions, so deviations in pressure or wear can change actual flow, but under the specified conditions the 125 GPM figure is correct.

In a foam firefighting setup, the nozzle’s flow rating tells you how much foam solution the nozzle is designed to deliver at the system’s nominal discharge pressure. If the nozzle is rated at 125 GPM, that means at the designated pressure for the foam system it will discharge about 125 gallons per minute. This rating is used to size hoses, calculate friction losses, and ensure the foam concentrate is proportioned correctly with water to create the intended foam blanket. The rating is tied to the system’s design conditions, so deviations in pressure or wear can change actual flow, but under the specified conditions the 125 GPM figure is correct.