Friction Loss Calculator
Williams-Hazen formula · C = 150 (thermoplastic pipe)
GPM
PSI Loss per 100 ft
3.039
Velocity (ft/sec)
5.52
⚠ Velocities over 5 ft/sec should be selected with caution.
SIDR · All PSI · 1-1/2" · 35 GPM
SIDR · All PSI · 1-1/2" · I.D. 1.610" · 35 GPM · 3.039 PSI Loss per 100 ft · 5.52 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.