What is the discharge in GPM from a 1 1/4" tip with 50 psi nozzle pressure?

What is the discharge in GPM from a 1 1/4" tip with 50 psi nozzle pressure?

• A. 235
• B. 250
• C. 299
• D. 327

Answer: (D)

To determine the discharge in gallons per minute (GPM) from a nozzle with a given size and pressure, you can use the formula that relates nozzle size and nozzle pressure to flow rate. For a 1 1/4-inch (or 1.25-inch) diameter tip, the expected flow rate at a pressure of 50 psi can be calculated using standardized flow formulas. Typically, the formula used is: \[ GPM = \text{Tip Size (inches)}^2 \times \text{Nozzle Pressure (psi)} \times 29.7 \] In this scenario, the tip size squared is \(1.25^2 = 1.5625\). When multiplied by the nozzle pressure of 50 psi, the calculation becomes: \[ 1.5625 \times 50 \times 29.7 \approx 2500 \] Then, to find the GPM, we divide by 100: \[ GPM \approx 2500/100 = 25 \] However, this is a simplified view. Using industry-standard tables for specific nozzle sizes at known pressures also shows that a 1 1/4-inch tip with 50 psi typically dis

To determine the discharge in gallons per minute (GPM) from a nozzle with a given size and pressure, you can use the formula that relates nozzle size and nozzle pressure to flow rate. For a 1 1/4-inch (or 1.25-inch) diameter tip, the expected flow rate at a pressure of 50 psi can be calculated using standardized flow formulas.

Typically, the formula used is:

[

GPM = \text{Tip Size (inches)}^2 \times \text{Nozzle Pressure (psi)} \times 29.7

]

In this scenario, the tip size squared is (1.25^2 = 1.5625). When multiplied by the nozzle pressure of 50 psi, the calculation becomes:

[

1.5625 \times 50 \times 29.7 \approx 2500

]

Then, to find the GPM, we divide by 100:

[

GPM \approx 2500/100 = 25

]

However, this is a simplified view. Using industry-standard tables for specific nozzle sizes at known pressures also shows that a 1 1/4-inch tip with 50 psi typically dis