What is the flow rate for a 1 ¾" 200' Pre-Connect with a 15/16" SB nozzle?

To determine the flow rate for a 1 ¾” pre-connected hose with a 15/16” smooth bore nozzle, we utilize specific fire hydraulics principles, including the formula that relates nozzle size, friction loss, and the pressure at the nozzle.

For this combination, a 15/16” nozzle typically flows around 185 gallons per minute (GPM) at a pressure of 100 psi in a 1 ¾” pre-connect. This figure is derived from standardized flow data based on the nozzle's design and hose diameter under typical operational conditions.

Considering friction loss over a length of 200 feet of 1 ¾” hose, the calculations and empirical data suggest that maintaining pressure around 100 psi allows for optimal flow for this type of setup, commonly resulting in a flow rate of approximately 185 GPM. Therefore, the choice stating that 100 psi will flow 185 GPM aligns with established hydraulic principles, making it the appropriate answer for this question.

In this context, other options either suggest flow rates that do not correspond with established data or involve pressures that don't accurately account for the hydraulic conditions present in a 200 ft pre-connect scenario.