The firedepartment.net staff has created friction loss tables for the most common fire hose sizes (3/4", 1", 1.25", 1.5", 1.75", 2", 2.5", 3", 3.5", 4", 4.5", 5" & 6"). Click on any thumbnail image below to see (and download/print) the corrosponding friction loss table.
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 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
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