Re: what is the average pressure of a deep well subm. pump?
How deep is the well? How many HP is the pump?
Take the depth of the well in feet, divide that by 2.31*, add that to the PSI pressure at the top, and that's the pressure AT THE PUMP. Submersible pumps must typically be higher HP than above-ground pumps, because of the extra pressure at the pump. The deeper the well, the bigger the pump must be to achieve the same pressure and flow rate.
(*For every 2.31 feet of elevation change, there is one PSI pressure change. That is to say, a column of water 231 feet tall with no pressure applied at the top will have a pressure of 100 PSI at the bottom. The diameter of the pipe is irrelevant.)
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.