What is the velocity pressure for a 2 inch Schedule 5 steel pipe with a flow rate of 25 gpm?

To determine the velocity pressure for a 2-inch Schedule 5 steel pipe with a flow rate of 25 gallons per minute (gpm), it is essential to understand the relationship between flow rate, pipe diameter, and velocity pressure.

Velocity pressure can be calculated using the formula:

[ P_v = \frac{(Q \times 0.408)^2}{d^5} ]

Where:

• ( P_v ) is the velocity pressure in psi,
• ( Q ) is the flow rate in gpm,
• ( d ) is the diameter of the pipe in inches.

Using the values given:

1. The flow rate, ( Q ), is 25 gpm.
2. The diameter of the 2-inch pipe, ( d ), is 2 inches.

First, we convert the flow rate into a form suitable for the formula:

[ 25 , \text{gpm} \times 0.408 = 10.2 , \text{gpm} ]

Now, substituting into the formula:

[ P_v = \frac{(10.2)^2}{2^5} ]

Calculating:

• ( 10.2^2