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07/16/2014, 06:28 PM
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#76 |
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.Registered Member
Join Date: Sep 2006
Location: Cincinnati, Ohio
Posts: 4,857
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You should have a functioning check valve on the permeate line - sounds like you don't have one or it's not working.
Russ |
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07/16/2014, 10:12 PM
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#77 |
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Registered Member
Join Date: Oct 2012
Location: DFW,Area
Posts: 798
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Not part of my issue but i dont think it was directed at me either as for i only fill up my rodi tank from my unit. I have no line from rodi going into my salt tank. This is done by valves and a pump
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07/17/2014, 06:50 AM
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#78 | |
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LouH
Join Date: Jan 2005
Location: Reno, NV
Posts: 681
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Quote:
I do not have a check valve on that line. I ended up just shortening it so that it is physically impossjble for the water level to reach it. Lou |
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07/17/2014, 06:53 AM
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#79 | |
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LouH
Join Date: Jan 2005
Location: Reno, NV
Posts: 681
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Quote:
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07/17/2014, 06:54 AM
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#80 |
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.Registered Member
Join Date: Sep 2006
Location: Cincinnati, Ohio
Posts: 4,857
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That will work too!
BTW - Sometimes people don't think they have a check valve but they actually do. Sometimes it is built into the elbow fitting in the permeate port in the RO membrane housing. They don't last forever. Russ |
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07/17/2014, 01:46 PM
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#81 |
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Registered Member
Join Date: Dec 2011
Location: Duluth MN
Posts: 330
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Just FYI, Dow has newer membrane, the BW60-1812-75 that replaces the TW30 and has a 99% rejection rate.
__________________
300 gallon mixed reef...lots of other equipment!! |
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07/17/2014, 02:14 PM
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#82 |
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.Registered Member
Join Date: Sep 2006
Location: Cincinnati, Ohio
Posts: 4,857
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Yep - been out for quite some time. This is what our "standard" 75 gpd membrane is. But as always, you aren't always going to see 99% from it.
Russ |
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