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Anonymous Poster

PSI Calculation

04/30/2010 11:08 AM

I have a 60' verticle column of water (well) with a 3' pipe coming off the bottom of the column. Within 5' of the pipe exiting the well I have a 2" line coming out vertically (at 90 angle) from the 3' pipe.

Question - how do I determine the PSI coming out of the 2" line?

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Guru

Join Date: Oct 2008
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#1

Re: Determining PSI

04/30/2010 11:16 AM

Measure it. I bought a pressure gauge the other day for about $15.00 that screws onto the hose bib. PSI doesn't "come out of the line". The pressure is measured with no flow.

Or, if this is homework, come clean now.

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Commentator
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#2
In reply to #1

Re: Determining PSI

04/30/2010 11:23 AM

Measure it.

----------------

Measure what? The shut-off head? Simple. Can be calculated as the static head.

Let us suppose you attach a hose to the outlet. And position a pressure gauge at the outlet. What are you measuring? The pressure drop along the hose?

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Anonymous Poster
#3
In reply to #2

Re: Determining PSI

04/30/2010 11:47 AM

Two inch line is failing and may rupture.

The 2" pipe does have a shut off where it connects to the 3' pipe.

Our concern is if the shut off valve should fail as we break the pipe connections above for repair - what would the results be coming out of the 2" line?

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Guru
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#7
In reply to #3

Re: Determining PSI

05/04/2010 3:21 AM

Some water will come out, as determined by the ability of the valve to shut off and the quantity of water behind it.

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Anonymous Poster
#4

Re: PSI Calculation

04/30/2010 2:14 PM

Two inch line is failing and may rupture.

The 2" pipe does have a shut off where it connects to the 3' pipe.

Our concern is if the shut off valve should fail as we break the pipe connections above for repair - what would the results be coming out of the 2" line?

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Power-User
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#6

Re: PSI Calculation

04/30/2010 3:04 PM

Sixty feey times 0.433 equals 25.98 PSI

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