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Old 02-18-2012, 09:31 PM
tyjohnso tyjohnso is offline
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need help with add on system with flow

Hey guys... I am adding on to a system that was installed back in 1993.
I have the blue prints of the system... Its on a well.

Static Pressure is 55 PSI, Residual Pressure is 25 PSI, and Design Pressure is 50 PSI....

whats the residual pressure deal? is that my Flow? Thanks
I have looked online and stuff and cant figure it out...

If it is not the flow.... how would i figure the flow on a well with it alread in the ground?

Out of 15 Zones, the highest GPM is 24.6

Thanks
Ty
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  #2  
Old 02-18-2012, 10:58 PM
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FIMCO-MEISTER FIMCO-MEISTER is offline
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How did you determine that 24.6 gpm? Is the well on a meter?
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Old 02-18-2012, 11:51 PM
tyjohnso tyjohnso is offline
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.

On my blue prints i have zone schedule.... how many heads, what type and GPM of each zone...
The well has no meter....
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Old 02-19-2012, 09:31 AM
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Wet_Boots Wet_Boots is online now
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Wells are their own animal, and each one is different. If you don't have a performance log of a well install, you do best to make your own. It isn't very difficult to extend a zone and suddenly find you are running a well dry.
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Old 02-19-2012, 11:31 AM
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Mike Leary Mike Leary is offline
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Boots is correct, it's real possible to exceed the re-charge capability. I'd be doing a pump-down test, or hire a pump guy to chart it out. You're going to standing there with your zipper open if you don't. Click on "flow meter".
betterwaterind.com

Last edited by Mike Leary; 02-19-2012 at 11:40 AM.
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Old 02-19-2012, 12:14 PM
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1idejim 1idejim is online now
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Quote:
Originally Posted by tyjohnso View Post
Hey guys... I am adding on to a system that was installed back in 1993.
I have the blue prints of the system... Its on a well.

Static Pressure is 55 PSI, Residual Pressure is 25 PSI, and Design Pressure is 50 PSI....

whats the residual pressure deal? is that my Flow? Thanks
I have looked online and stuff and cant figure it out...

If it is not the flow.... how would i figure the flow on a well with it alread in the ground?

Out of 15 Zones, the highest GPM is 24.6

Thanks
Ty
using MLs suggestion will allow you to accurately measure your supply. a bucket test will ballpark your supply.

assuming that this is an average submersable pump on an average domestic well the maximum realistic supply will be between 18-22 gpm.

if your blueprints are correct you may be overtaxing the supply which would explain lower operating pressure.

this manual may be of some help.

https://gpda.goulds.com/assets/Files/Gen/BPUMP.pdf
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Old 02-19-2012, 12:17 PM
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jvanvliet jvanvliet is offline
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http://www.cannonwater.com/Products/flow_meters.html
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  #8  
Old 02-19-2012, 05:06 PM
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1idejim 1idejim is online now
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this might interest you also

http://www.pumped101.com/
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  #9  
Old 02-19-2012, 07:55 PM
txirrigation txirrigation is offline
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I am guessing residual pressure means dynamic pressure? Just a thought.

I would design around 15-16 gpm just to be safe, this will also increase your dynamic pressure because the water will move through the pipes slower.

Boomer Sooner!
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