Friction Loss Calculator
Williams-Hazen formula · C = 150 (thermoplastic pipe)
GPM
PSI Loss per 100 ft
4.301
Velocity (ft/sec)
4.60
DR-13.5 · 160 PSI · 3/4" · 9 GPM
DR-13.5 · 160 PSI · 3/4" · I.D. 0.894" · 9 GPM · 4.301 PSI Loss per 100 ft · 4.60 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.