Friction Loss Calculator
Williams-Hazen formula · C = 150 (thermoplastic pipe)
GPM
PSI Loss per 100 ft
0.754
Velocity (ft/sec)
1.85
DR-7 · 333 PSI · 1" · 4 GPM
DR-7 · 333 PSI · 1" · I.D. 0.939" · 4 GPM · 0.754 PSI Loss per 100 ft · 1.85 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.