What is the flow rate of a 2" LW hose with a 2" smooth bore nozzle operating at 55 psi?

To determine the flow rate of a 2" lightweight (LW) hose equipped with a 2" smooth bore nozzle operating at 55 psi, we can refer to established formulas that relate flow rate, diameter, and pressure.

The flow through a smooth bore nozzle can be calculated using the formula:

[ GPM = 29.7 \times D^2 \times \sqrt{P} ]

where:

• GPM is the flow rate in gallons per minute,

• D is the diameter of the hose in inches,

• P is the pressure at the nozzle in psi.

Using the values for a 2" diameter and a pressure of 55 psi, we can substitute into the formula:

[ GPM = 29.7 \times (2^2) \times \sqrt{55} ]

Calculating this step by step:

1. Calculate ( 2^2 = 4 ).

2. Find ( \sqrt{55} \approx 7.42 ).

3. Multiply: ( 29.7 \times 4 \times 7.42 ).

This results in approximately:

[ GPM = 29.7 \times 4 \times 7.42 ≈