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10/22/2007, 02:07 PM
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#1 |
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Registered Member
Join Date: May 2005
Location: San Francisco Bay, Pacifica CA
Posts: 867
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Anyone add a tank to their RO unit?
I have an RO unit and want to add a reserve tank to it so I can also use it for drinking water. I saw some complete GE kit's at the local Home depot, but couldn't find, just the Tank and sink return. Anyone add this to there units and if so where did you find the parts?
Or even better is this a good idea as well? I want to be able to leave the unit on and once the reserve tank is full it shut's off. This way I always have some drinking water, plus water ready to auto topping off my tank. I know I can leave the unit on for a few hours a day to fill my mixing sump, but then I can' use it for drinking as well. and trying to fill a glass take's well forever. LOL Thanks, |
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10/22/2007, 02:33 PM
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#2 |
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Registered Member
Join Date: Oct 2005
Location: Pittsburgh, PA
Posts: 647
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I have a bladder tank on my setup, as we use RO in the kitchen, etc.
The only thing you need to be aware of is that when you have a tank added on, there is significant TDS "creep" that occurs due to your RO constantly keeping the tank full. I won't get into it (unless you want to know  ) but I went through a fair bit of trouble to alleviate this problem.If you are capable/don't mind to manually close off the tank and force water to come directly from your membrane to you DI stage, then you are set. If you don't want to deal with that, then you probably will find yourself going through DI much quicker then before. |
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10/26/2007, 11:07 AM
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#3 |
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.Registered Member
Join Date: Sep 2006
Location: Cincinnati, Ohio
Posts: 4,857
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Ideally you would not send water from the pressurized storage tank through your DI. A better configuration has a tee with one side going to a check valve and on the the tank; and the other side going to your DI cartridge.
Russ |
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10/26/2007, 11:16 AM
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#4 |
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Registered Member
Join Date: Oct 2003
Posts: 827
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interesting topic, can you show a map of the configuration you are suggesting Buckeye? I need clarification, thanks!
__________________
DRILL IT!!! Current Tank Info: In charge of over 50,000 gallons of fish only tanks |
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10/26/2007, 04:43 PM
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#5 |
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Registered Member
Join Date: Aug 2002
Location: SE PA
Posts: 827
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A bladder tank can reduce the rejection rate because it drops the delta P. For drinking water this is OK. What I do is close the bladder when making tank water and open it when making drinking/cooking water.
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10/26/2007, 04:59 PM
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#6 |
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On Yer left!
 
Join Date: Sep 2004
Location: Northern VA
Posts: 18,777
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__________________
- Scott |
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10/26/2007, 05:34 PM
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#7 |
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Registered Member
Join Date: Aug 2006
Location: Western Wisconsin
Posts: 681
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My spectrapure maxcap 90 is setup like the figure on the right above. My RO (only) line runs about 25 feet to the storage tank. I manually turn on the valve to the RODI side when I fill my storage containers for top-off/water change. Works great, plus my wife said the Drinking Water setup is the best thing that's ever happened! points for me!
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10/26/2007, 07:24 PM
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#8 |
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.Registered Member
Join Date: Sep 2006
Location: Cincinnati, Ohio
Posts: 4,857
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The graphic above shows the general idea, but neither shows a pressure tank with a full size vertical DI.
Russ |
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10/26/2007, 07:26 PM
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#9 |
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.Registered Member
Join Date: Sep 2006
Location: Cincinnati, Ohio
Posts: 4,857
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Can't say that I remember how to post pictures! Agh!
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10/26/2007, 07:50 PM
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#10 |
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On Yer left!
Join Date: Sep 2004
Location: Northern VA
Posts: 18,777
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Well, turn your head sideways, and kind of imagine.....
__________________
- Scott |
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