Friction Loss Tables

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.

3/4 inch friction loss table
3/4 Inch
1 inch friction loss table
1 Inch
1 1/4 inch friction loss table
1 1/4 Inch
1 1/2 inch friction loss table
1 1/2 Inch
1 3/4 inch friction loss table
1 3/4 Inch
2 inch friction loss table
2 Inch
2 1/2 inch friction loss table
2 1/2 Inch
3 inch friction loss table
3 Inch
3 1/2 inch friction loss table
3 1/2 Inch
4 inch friction loss table
4 Inch
4 1/2 inch friction loss table
4 1/2 Inch
5 inch friction loss table
5 Inch
6 inch friction loss table
6 Inch

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.

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