Learn how to solve friction loss (fire hose pressure loss) with the friction loss formula. See simple examples of solving friction loss formula. Use a scientific calculator, a standar calculator or even solve the equation by hand. Use the online Friction Loss Calculator to verify your answer(s).FL = C * (Q / 100) ^2 * L / 100
What is the friction loss for a 200 foot of 1.75 inch hose flowing 150 GPM of water?Coefficient (C) for 1.75" hose is 15.5 (See Table 1)
Answer: There's 69.75 PSI friction loss for a 200 foot of 1.75
inch hose with 150 GPM.
Answer verified in the friction loss calculator
Friction Loss Coefficient
|1 ¼ inch||80|
|1 ½ inch||24|
|1 ¾ inch||15.5|
|2 ½ inch||2|
|3 ½ inch||0.34|
|4 ½ inch||0.1|
What is the friction loss of 200 feet of 1.75" hose with 200 gpm? Answer 200' of 1.75" @ 200 GPM
What is the friction loss of 150 feet of 2" hose with 500 gpm? Answer 150' of 2" @ 500 GPM
What is the frictin loss of 100' of 1" hose with 100 gpm?Answer 100' of 1" @ 100 GPM
What is the frictin loss of 300' of 3" hose with 600 gpm?Answer 300' of 3" @ 600 GPM
What is the frictin loss of 400' of 3" hose with 800 gpm?Answer 400' of 4" @ 800 GPM
Verify your own friction loss problems with Friction Loss Calculator
Friction Loss Explained
Friction loss occurs when water passes through a hose. Hose length, diameter, and GPM (volume) all affect friction loss. As water passes through a hose, friction between the water and the inside surface of the hose causes turbulence, which slows the water. The results in a PSI drop (pressure loss) at the other end of the hose. The higher the gpm passing through a hose, the more turbulance and friction loss will result.
Additional Fire Engine Operator Tools
The FireDepartment.net staff have designed additional fire training tools:
FireDepartment.net strives to provide fire departments & firefighters with quality tools. But, the user takes full responsiblity for the information contained above. Use at your own risk!