Friction Loss Calculator
Williams-Hazen formula · C = 150 (thermoplastic pipe)
GPM
PSI Loss per 100 ft
2.388
Velocity (ft/sec)
4.74
DR-11 · 200 PSI · 1-1/2" · 28 GPM
DR-11 · 200 PSI · 1-1/2" · I.D. 1.554" · 28 GPM · 2.388 PSI Loss per 100 ft · 4.74 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.