If a hose assembly includes a 200-foot section of 2 1/2-inch hose and a 300-foot section of the same size flowing at 200 GPM, what is the total pressure loss?

To determine the total pressure loss in a hose assembly, you need to consider both the length and diameter of the hoses, as well as the flow rate. The pressure loss in hose lines is generally calculated using the Hazen-Williams formula, which factors in the diameter of the hose, the flow rate, and the length of the hose.

In this scenario, you have two sections of 2 1/2-inch hose: one is 200 feet long and the other is 300 feet long, making a total length of 500 feet. When flowing at a rate of 200 GPM (gallons per minute), the pressure loss can be calculated considering the characteristics of the hose material and flow conditions.

For 2 1/2-inch hose at 200 GPM, the typical pressure loss is about 10 PSI per 100 feet of hose. Consequently, for the total length of 500 feet, the pressure loss would be:

• For the first 200 feet: 20 PSI (10 PSI for each 100 feet)

• For the next 300 feet: 30 PSI (again, 10 PSI for each 100 feet)

• Therefore, the total pressure loss would be calculated as 20 PSI