QuestionJuly 31, 2025

12. What is the flow rate of a 13/8'' smooth bore master stream tip with a nozzle pressure of 80 PSI?

12. What is the flow rate of a 13/8'' smooth bore master stream tip with a nozzle pressure of 80 PSI?
12. What is the flow rate of a 13/8'' smooth bore master stream tip with a nozzle pressure of 80 PSI?

Solution
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Answer

743.5 GPM Explanation 1. Convert diameter to inches \( \frac{13}{8} \) inches is equivalent to 1.625 inches. 2. Use the flow rate formula for smooth bore nozzles The formula for flow rate ( Q ) in GPM (gallons per minute) is **\( Q = 29.7 \times d^2 \times \sqrt{P} \)**, where ( d ) is the diameter in inches and ( P ) is the pressure in PSI. 3. Calculate flow rate Substitute ( d = 1.625 ) and ( P = 80 ) into the formula: \( Q = 29.7 \times (1.625)^2 \times \sqrt{80} \).

Explanation

1. Convert diameter to inches<br /> \( \frac{13}{8} \) inches is equivalent to 1.625 inches.<br />2. Use the flow rate formula for smooth bore nozzles<br /> The formula for flow rate ( Q ) in GPM (gallons per minute) is **\( Q = 29.7 \times d^2 \times \sqrt{P} \)**, where ( d ) is the diameter in inches and ( P ) is the pressure in PSI.<br />3. Calculate flow rate<br /> Substitute ( d = 1.625 ) and ( P = 80 ) into the formula: <br /> \( Q = 29.7 \times (1.625)^2 \times \sqrt{80} \).
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