Friction Loss Calculator
Williams-Hazen formula · C = 150 (thermoplastic pipe)
GPM
PSI Loss per 100 ft
13.379
Velocity (ft/sec)
8.28
⚠ Velocities over 5 ft/sec should be selected with caution.
DR-11 · 200 PSI · 3/4" · 15 GPM
DR-11 · 200 PSI · 3/4" · I.D. 0.860" · 15 GPM · 13.379 PSI Loss per 100 ft · 8.28 ft/sec ⚠ high velocity
Values are calculated using the Williams-Hazen formula (C = 150) and are provided for reference only. Interstate Plastic, Inc. makes no warranty as to accuracy or fitness for any particular use. Consult a licensed engineer for system design.