What is the flow rate for a 1 ¾" 150' Courtyard pack with a 15/16" SB nozzle at 90 psi?

What is the flow rate for a 1 ¾" 150' Courtyard pack with a 15/16" SB nozzle at 90 psi?

• A. 180 GPM
• B. 190 GPM
• C. 185 GPM
• D. 200 GPM

Answer: (C)

The flow rate for a 1 ¾" line using a 15/16" smooth bore nozzle at a nozzle pressure of 90 psi can be calculated using the formula for smooth bore nozzles, which states that the flow rate in gallons per minute (GPM) is derived from the nozzle size and the nozzle pressure. For a 15/16" nozzle, the formula to estimate the flow rate is: \[ \text{Flow Rate (GPM)} = 29.7 \times (d^2) \times \sqrt{P} \] where: - \( d \) is the diameter of the nozzle in inches (for 15/16", this is approximately 0.9375 inches), - \( P \) is the nozzle pressure in psi (in this case, 90 psi). Using this formula for a 15/16" nozzle at 90 psi gives us: 1. Convert the diameter into the formula: \( d^2 = (0.9375)^2 \approx 0.8789 \) 2. Use the nozzle pressure: \( \sqrt{90} \approx 9.4868 \) 3. Plug these values into the flow rate

The flow rate for a 1 ¾" line using a 15/16" smooth bore nozzle at a nozzle pressure of 90 psi can be calculated using the formula for smooth bore nozzles, which states that the flow rate in gallons per minute (GPM) is derived from the nozzle size and the nozzle pressure.

For a 15/16" nozzle, the formula to estimate the flow rate is:

[ \text{Flow Rate (GPM)} = 29.7 \times (d^2) \times \sqrt{P} ]

where:

• ( d ) is the diameter of the nozzle in inches (for 15/16", this is approximately 0.9375 inches),

• ( P ) is the nozzle pressure in psi (in this case, 90 psi).

Using this formula for a 15/16" nozzle at 90 psi gives us:

1. Convert the diameter into the formula:

( d^2 = (0.9375)^2 \approx 0.8789 )

2. Use the nozzle pressure:

( \sqrt{90} \approx 9.4868 )

3. Plug these values into the flow rate