Friction Loss Calculator
Williams-Hazen formula · C = 150 (thermoplastic pipe)
GPM
PSI Loss per 100 ft
0.177
Velocity (ft/sec)
1.65
DR-9 · 250 PSI · 3" · 30 GPM
DR-9 · 250 PSI · 3" · I.D. 2.722" · 30 GPM · 0.177 PSI Loss per 100 ft · 1.65 ft/sec
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.