Hays Velocity Calculator
  Inputs
Diameter, D: inches
Flow Rate, Q: GPM (US)
Calculations
Velocity, V: ft/sec
 
Additional Useful Tools:
Min Diameter (based on Vmax = 7fps)
Enter GPM (US):
Min. Diameter: inches
Pipe Size (recommended):
 
Qmax through a pipe
Enter Diameter, D: inches
Enter Velocity, Vmax: ft/sec
Max. Flow: GPM(US)