Water Delivery Flow Velocities

 Required flow velocities in water transport systems - on the delivery side of the pump

As a rule of thumb the following velocities can be used in design of piping and pumping systems for water:

Pipe Dimension		Water
inches	mm	m/s	ft/s
1	25	1	3.5
2	50	1.1	3.6
3	75	1.15	3.8
4	100	1.25	4
6	150	1.5	4.7
8	200	1.75	5.5
10	250	2	6.5
12	300	2.65	8.5