48 B a s i c p u m p h y d r auli c s All pumping applications have three things in common Flow Amount of liquid to be pumped Quantity divided by time 1 Elevation Gravity resistance Difference in vertical elevation from source to termination 2 Distance F riction resistance determined by the diameter fow and hosepipe material Length of hosepipe from source to termination 3 T o size a permanent or temporary pumping application start by gathering data on fow elevation and distance 1 See page 49 2 See page 50 3 See page 51 54 Pumps 101