Friction Loss Calculator
Williams-Hazen formula · C = 150 (thermoplastic pipe)
GPM
PSI Loss per 100 ft
0.265
Velocity (ft/sec)
1.33
DR-7 · 333 PSI · 1-1/2" · 6 GPM
DR-7 · 333 PSI · 1-1/2" · I.D. 1.358" · 6 GPM · 0.265 PSI Loss per 100 ft · 1.33 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.