What is the flow rate and pressure for a 1 ¾" 200' Pre-Connect with fog nozzle?

What is the flow rate and pressure for a 1 ¾" 200' Pre-Connect with fog nozzle?

• A. 75 psi will flow 150 GPM
• B. 90 psi will flow 200 GPM
• C. 100 psi will flow 175 GPM
• D. 80 psi will flow 175 GPM

Answer: (C)

The flow rate and pressure for a 1 ¾" 200' pre-connect with a fog nozzle is determined by the friction loss in the hose and the performance characteristics of the nozzle being used. In this case, a 100 psi pressure will yield a flow rate of 175 GPM, which aligns with the established guidelines for that specific hose size and configuration. The pressure's contribution to achieving sufficient flow is significant, particularly over a distance of 200 feet, which results in notable friction loss. For a 1 ¾” hose, a nozzle flow of 175 GPM at 100 psi is a common standard reflecting the typical performance expected from both the hose and the nozzle combination. This balance ensures that firefighters can effectively manage fire suppression while maintaining the necessary pressure to combat any potential drop due to friction loss over a long stretch of hose. Other options suggest different flow rates and pressures that do not align with standard calculations for this setup. Hence, the choice of 100 psi flowing 175 GPM effectively represents the most accurate and practical answer for operational efficiency in fire response situations.

The flow rate and pressure for a 1 ¾" 200' pre-connect with a fog nozzle is determined by the friction loss in the hose and the performance characteristics of the nozzle being used. In this case, a 100 psi pressure will yield a flow rate of 175 GPM, which aligns with the established guidelines for that specific hose size and configuration.

The pressure's contribution to achieving sufficient flow is significant, particularly over a distance of 200 feet, which results in notable friction loss. For a 1 ¾” hose, a nozzle flow of 175 GPM at 100 psi is a common standard reflecting the typical performance expected from both the hose and the nozzle combination. This balance ensures that firefighters can effectively manage fire suppression while maintaining the necessary pressure to combat any potential drop due to friction loss over a long stretch of hose.

Other options suggest different flow rates and pressures that do not align with standard calculations for this setup. Hence, the choice of 100 psi flowing 175 GPM effectively represents the most accurate and practical answer for operational efficiency in fire response situations.