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Anyone have GPM vs. PSI for one of these?
How 'bout for a 1/2" ID 90 degree elbow?
Did you have a specific fluid in mind, or just looking for a rough guess?
cold water
http://www.engineeringtoolbox.com/darcy-weisbach-equation-d_646.html
I need it for the fittings; valves, elbows, tees
The pressure drop is equivalent to around 90 diameters of straight pipe, as a rule-of-thumb.