On 8/14/2018 5:50 PM, dpb wrote:
On 8/14/2018 3:58 PM, Arlen Holder wrote:
...

I tested the gauge pressure just now by turning off the power and then
running the garden hoses at the house until they petered out.
Interestingly, at the booster pump shed, the hose on the wall did NOT
peter
out, as the pressure gauge barely dropped from a bit over 70psi ....
Â* http://www.bild.me/bild.php?file=6541228pump03.jpg
to about 66 psi when the water was an unusable dribble at the house
Â* http://www.bild.me/bild.php?file=5704779pump11.jpg Gauge at 66psi

I could tell that the blue booster tank was 'empty' as I could tilt it by
hand ever so slightly when it is empty but I can't budge it when it is
full.

And yet, when I turned on the faucet on the pump house wall, it was fine!
Â*Â* http://www.bild.me/bild.php?file=7395493pump12.jpg

So that gauge pressure is really almost completely input pressure!

It's quite possible it always reads the same pressure because it's
frozen up...and/or the orifice in the base is plugged.

The gage appears to be working as there was plenty of pressure (i.e.,
66psi) "at" the booster pump shed - but none a few hundred feet away
at the
house.

So it appears that the "static pressure" of a full tank of water in the
10,000 gallon tanks is about 65psi. The booster pump boosts that up so
that
the water won't just dribble at the house.
...

Water static head is 1 psi/2.3 ft elevation so that would require 65/2.3
= 28 ft height above that point.

Just wanted to point out, your math is a little off. Should be 65 x 2.3
which indicates a head of 149.5 feet. ( 1 foot of head produces .43 lbs
of pressure.)


That experiment illustrates the point raised before of you have
extremely high pressure losses in the distribution system it appears or
the house is up on a hill, maybe?

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