Friction Loss Calculator
Williams-Hazen formula · C = 150 (thermoplastic pipe)
GPM
PSI Loss per 100 ft
3.286
Velocity (ft/sec)
3.17
SIDR · All PSI · 1/2" · 3 GPM
SIDR · All PSI · 1/2" · I.D. 0.622" · 3 GPM · 3.286 PSI Loss per 100 ft · 3.17 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.