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Old May 23, 2016   #11
Worth1's Avatar
Join Date: Feb 2006
Location: Bastrop Texas Lost Pines Forest.
Posts: 32,304

Lets say all things being equal on your up hill down hill thing.
I need elevation.
But if you are going down hill for 188 feet on a certain slope and going up 100 feet on the same degree of angle or grade.
You will gain around 34 PSI alone just from the fact that water head pressure is 4.3 pounds for every 10 feet of elevation.
You have 188 going down and 100 going up.
The 100 feet down and up equalizes and you gain the pressure of 88 feet worth of head.
That is if the elevations are as I said but they aren't.
What is the difference in elevation from one point to the other?

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