Hoping someone can help me with this. Trying to solve for other variables from this equation, not sure where to start.

Flow=((0.036*0.85*169.65*SQRT(2*( P *2.48843)*(1+51.6/273)/1.72/(1-(14.7/150)^4))*48)*(273/(273+51.6))

So right now if I calculate with P being 5, you should get a flow of 655. I need to reverse this to enter the pressure and it give me the flow.

Hopefully that makes since.

Thank you for you time.

PLC