Sprinkler Friction Loss Calculator (Hazen-Williams)

What is the Hazen-Williams equation for sprinkler friction loss?

In US customary form, pressure loss is ΔP = 4.52 × Q^1.852 × L / (C^1.852 × d^4.87), where Q is flow in GPM, L is length in feet, C is roughness coefficient, and d is inside diameter in inches. The calculator applies this form directly.

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