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Old 10-04-2012, 10:25 PM   #21
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It's an Ro/Di you have your membrane up top and the canisters are in order your sediment filter followed by your carbon block then your Di resin canister. A fourth canister would mean you would have a 5 micron carbon block as 2nd canister followed by a .6 micron carbon block as third canister then the fourth would be the Di resin
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Old 10-04-2012, 10:27 PM   #22
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RO units only require 2 canisters.. here's my 4 stage brs Ro/Di hooked up on my sink
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Old 10-04-2012, 10:38 PM   #23
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Ah, now that I have a full size of it, I see the output water line coming out of the last canister, so that would be for DI. Mobile phone image fail Thanks MRC.
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Old 10-04-2012, 10:40 PM   #24
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Quote:
Originally Posted by Mrc8858 View Post
RO units only require 2 canisters.. here's my 4 stage brs Ro/Di hooked up on my sink
You could do an RODI system with just 2 canisters - an RO membrane and a DI canister, though it probably wouldn't be a good idea. The rest is dependent upon how much you want to preserve the RO membrane, and how hard your water is. You could add as many prefilters as you desire - the desired effect there is to reduce the amount of work your RO membrane has to do (because it is expensive to replace) by prefiltering the water with cheap carbon blocks and sediment filters.
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Old 10-04-2012, 10:44 PM   #25
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Quote:
Originally Posted by fort384

You could do an RODI system with just 2 canisters - an RO membrane and a DI canister, though it probably wouldn't be a good idea. The rest is dependent upon how much you want to preserve the RO membrane, and how hard your water is. You could add as many prefilters as you desire - the desired effect there is to reduce the amount of work your RO membrane has to do (because it is expensive to replace) by prefiltering the water with cheap carbon blocks and sediment filters.
True but the standard right now is a sediment filter followed by a carbon block in almost every system so pretty much every setup will have the 2 main canisters
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Old 10-04-2012, 11:35 PM   #26
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I have the membrane one on top and the three on the bottom. Although they are empty I was going to get the sediment carbon and do filters for them probably some time this weekend
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Old 10-04-2012, 11:38 PM   #27
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Sounds like a plan. BRS has some good prices on DI resin and filters, especially if you get in on a group buy.
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Old 10-05-2012, 12:14 AM   #28
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alright I just reposted the BRS Group buy thread. Mrc, I deleted our OT posts so we don't hijack Debs thread
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Old 10-05-2012, 12:42 AM   #29
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if it helps, I can describe it better:

there is a black like coming into #1 sediment (leftmost), it has a short black line going directly to #2 carbon block.
#2 has a line coming out if the back going into the top one (membrane). the top one has two out lines, a white line and a black line. the white line goes "out" to nowhere (has a little connector thingy, then another short line), the black line goes to the rear of #3 di. front of #3 has a blue line going "out" to nowhere.

from my youtube adventures, the black line out of the top one can be connected to a flush kit right? otherwise this is the "discarded" water. the blue hose coming out of #3 is the new clean ro/di water.

am i understanding this correctly?
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Old 10-05-2012, 12:51 AM   #30
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Yes that sounds right though you need a flush valve to hook up a flush kit.
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