The 1 1/2 inch hose can flow in what GPM range?

The 1 1/2 inch hose can flow in what GPM range?

• A. 60 to 125
• B. 30 to 60
• C. 90 to 140
• D. 125 to 200

Answer: (A)

A 1 1/2 inch handline is designed for moderate flows, and its typical operating range with standard firefighting nozzles is about 60 to 125 gallons per minute. The minimum around 60 GPM represents a practical, usable setting where the nozzle produces an effective spray pattern at common operating pressures. The maximum near 125 GPM reflects the practical limit for a single 1 1/2 inch line with ordinary nozzles; pushing beyond that generally requires a larger hose or multiple lines. Flows as low as 30–60 GPM or as high as 125–200 GPM aren’t characteristic for this hose size in typical fireground use, which is why the 60–125 GPM range is the correct reference.

A 1 1/2 inch handline is designed for moderate flows, and its typical operating range with standard firefighting nozzles is about 60 to 125 gallons per minute. The minimum around 60 GPM represents a practical, usable setting where the nozzle produces an effective spray pattern at common operating pressures. The maximum near 125 GPM reflects the practical limit for a single 1 1/2 inch line with ordinary nozzles; pushing beyond that generally requires a larger hose or multiple lines. Flows as low as 30–60 GPM or as high as 125–200 GPM aren’t characteristic for this hose size in typical fireground use, which is why the 60–125 GPM range is the correct reference.