I have been searching for a long time and can't figure this out. The formulas I find are way over my head.(adsbygoogle = window.adsbygoogle || []).push({});

Anyhow, I am trying to find how much flow would go through 2 different sized pipes. One is 3/8" ID and the other is 1/2" ID. The 3/8" uses 26psi and the 1/2" uses 17psi. All I want to know is the GPM each one will flow. I noticed there was a lot about constant of liquids so just use water. As for pressure drop stuff, there is a pump drawing in water and the pipes are on the other side and they have no end on them, so they are just shooting the water out like a hose with no end on it.

Thanks for any help I can get on this. Sorry if it is a dumb question.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Pressure/GPM/Diameter Calculations

**Physics Forums | Science Articles, Homework Help, Discussion**