What is the flow range for 1.75 inch attack hose?

What is the flow range for 1.75 inch attack hose?

• A. 20 - 140 gpm
• B. 40 - 125 gpm
• C. 40 - 175 gpm
• D. 60 - 180 gpm

Answer: (C)

Flow range for a 1.75 inch attack hose reflects how much water you can deliver with typical handline nozzles at common nozzle pressures. This size can carry water from about 40 gpm with a tighter pattern to roughly 175 gpm with a wider pattern or certain high-flow nozzles. That broad range comes from the balance between the hose’s capacity and the nozzle’s settings: smaller flows are achieved with higher pattern restriction and higher nozzle pressure, while higher flows come from wider patterns and nozzles designed for larger throughput. The 40-175 gpm range best represents what you can expect in practice with standard equipment. The other ranges either miss the lower end or the upper end of what this hose can reasonably deliver, so they don’t fit typical use as well.

Flow range for a 1.75 inch attack hose reflects how much water you can deliver with typical handline nozzles at common nozzle pressures. This size can carry water from about 40 gpm with a tighter pattern to roughly 175 gpm with a wider pattern or certain high-flow nozzles. That broad range comes from the balance between the hose’s capacity and the nozzle’s settings: smaller flows are achieved with higher pattern restriction and higher nozzle pressure, while higher flows come from wider patterns and nozzles designed for larger throughput. The 40-175 gpm range best represents what you can expect in practice with standard equipment. The other ranges either miss the lower end or the upper end of what this hose can reasonably deliver, so they don’t fit typical use as well.