Friction Loss Calculator

Hose Diameter

Hose Length (feet)

Flow Rate (GPM)


Friction Loss:{{ output_frictionloss }} PSI

A {{ output_length }} foot length of {{ output_hosesize }} inch hose flowing {{ output_gpm }} GPM has {{ output_frictionloss }} PSI friction loss.

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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.

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