Friction Loss Calculator

Instructions

Enter the hose / pipe diameter, the gallons per minute (GPM), and the length into the Friction Loss Calculator. Press the submit button to calculate.

Select Diameter From List
Enter GPM (Gallons Per Minute):
Hose Length (Feet)



Friction Loss Results (PSI):


Friction Loss Calculations Explained:


Friction loss occurs when water passes through a hose or pipe. Distance, diameter, and the GPM / volume, all affect friction loss. As water passes through the hose / pipe, friction between the water and the inside surface of the hose / pipe causes turbulence. This turbulence reduces the energy produced by the pump (PSI). As a result, the PSI at the other end of the hose will be lower. The higher the GPM passing through a hose or pipe, the more turbulance and friction loss will result.

Printable Friction Loss Calculator Charts

download 1 inch printable friction loss calculator
1 Inch
download 1 1/2 inch printable friction loss calculator
1 1/2 Inch
download 1 3/4 inch printable friction loss calculator
1 3/4 Inch
download 2 inch printable friction loss calculator
2 Inch
download 2 1/2 inch printable friction loss calculator
2 1/2 Inch
download 3 inch printable friction loss calculator
3 Inch

Disclaimer:

FireDepartment.net strives to provide fire departments and firefighters with quality training tools. But, the user takes full responsiblity for the information contained above. Use at your own risk!