How to convert gallons per min. to psi?

Question

How to convert gallons per min. to psi?

Answer 1

Take a look at http://www.lmnoeng.com/TankDischarge.htm...  

It has formulas for calculating o*****e discharge characteristics.  Be careful that you are aware of their use of cubic feet/second, for instance

Answer 2

You can't convert a volume flow rate to a pressure without a lot of other assumptions.

Answer 3

Well, for fire sprinkler discharge characteristics,

Q=K*(P^.5)  

where Q is gpm, K is a constant, and P is pressure in psi.  

But to give you a solid answer, you must first provide more information.  

Answer 4

A flow rate does not equal a pressure.

For instance, normal air pressure at sea level is 14.7 psi. Where are the gallons per minute?

A given pressure will produce a flow rate, but that depends on a lot of factor that are not mentioned: outlet diameter, density of the liquid, and so on.

Answer 5

Sorry, bad question, just think about the units which would have to be equivalent.

gall/min is a flow rate

psi=lbs/area is a pressure

They cannot be converted