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duel pumps - Page 5

post #41 of 67
Quote:
Why do they use 1" tubing when they test for head then?
pounds per inch
post #42 of 67
Quote:
Originally Posted by ira-k View Post
Why do they use 1" tubing when they test for head then?
Who is using 1" tubing? If that has been done, someone is thinking there is a reason behind matching area to the units, but that's just a misconception, it doesn't matter. PSI is pounds per "square inch" so as you change the column of waters area and weight, you are also distributing that same weight over a larger area.
    
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post #43 of 67
Quote:
Originally Posted by CL3P20 View Post
pounds per inch

Yeah probably....
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post #44 of 67
Quote:
Originally Posted by iampoor View Post
OFFTOPIC: you should stop requesting things like this. You will be infracted for it
It's a joke. Hence the

People do it all the time in the "I got $xxx to spend" - they're not serious.
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post #45 of 67
Dictionary.com Unabridged (v 1.1) - Cite This Source
psi
pounds per square inch.

Also, p.s.i.
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
    
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post #46 of 67
Martinm210 is absolutely correct -
Quote:
PSI is pounds per "square inch" so as you change the column of waters area and weight, you are also distributing that same weight over a larger area.
Took us forever to convince a guy at work that it's the same amount of head from a tank that has 40 feet of salt water in it, as a tap 40 feet under water in the middle of the ocean. ( we're assuming same altitude and water density ... k ? )
post #47 of 67
LOL..although..a 1" column of water is not square...so it would be pounds per cylindrical inch. lmao
post #48 of 67
Quote:
Originally Posted by Martinm210 View Post
Who is using 1" tubing? If that has been done, someone is thinking there is a reason behind matching area to the units, but that's just a misconception, it doesn't matter. PSI is pounds per "square inch" so as you change the column of waters area and weight, you are also distributing that same weight over a larger area.


Yeah your right you could use 1/2' at 40' for 20' of head and so on..Or you could use 2" at 10' and so on..Lighten up your going to blow a gasket Man....I would imagine they use 1" so they don't have to use 40' of tubing...The higher pressure is just from the back pressure of the second pump it just so happened to double my pressure reading...


Since I've actually thought about it your right about the pump flow to it would be impossible to double the flow through one....Now with a single pump you can use PSI to gauge the flow...Its as simple as using a bucket to measure the flow and match it to your pressure reading....I was so used to using one to gauge my flow I really didn't even think it through when I doubled up my pumps....
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post #49 of 67
Quote:
Originally Posted by ira-k View Post
Lighten up your going to blow a gasket Man..
I know I'm sorry, I do alot of this at work so I get a little protective when I'm challenged.

I did find a happy Petra's box on the front door step though, shiny MCW30 and a few other goods, I'll see what testing I can get done in the next few days.

I have more ideas than I'll have time, but do you have anything in particular you're interested in?
    
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post #50 of 67
Quote:
Originally Posted by Martinm210 View Post
I know I'm sorry, I do alot of this at work so I get a little protective when I'm challenged.

I did find a happy Petra's box on the front door step though, shiny MCW30 and a few other goods, I'll see what testing I can get done in the next few days.

I have more ideas than I'll have time, but do you have anything in particular you're interested in?


NP....Yeah I always like getting new goodies in the mail........I don't know, maybe do some more on your flow testing with some 90's and a block and rad...You know just to see the how much flow is affected in an actual loop with 2 or 3 or more 90's....That would be great if you have the time....
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