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  #1  
Old March 18th, 2013, 09:34 PM
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Default NF270-4040 membrane source?

Since I now have 1.5% sugar in my permeate, and the machine was working right then the permeate flow spiked, and my seals and o-rings are good and/or new, I can only assume I have some sort of internal membrane failure going on. Unfortunately, Joe at Atlantic RO is out of stock with them and is going to be for quite some time- Dow is behind schedule with them. Does anyone know of another reasonably priced source for them?

Any and all info will be appreciated.

Thanks,
Steve
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  #2  
Old March 19th, 2013, 01:22 AM
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get rid of 270 and go with xle 4040 i used 270s in my home made ro they were crap they would pass sugar after first year the 4040s are bullet proof iv done every thing wrong with them and they still dont pass any sugar even at 16 percent id buy them again and there even a little cheaper than the 270 .i might look at h20 membranes also but what iv put these things through it would be tough to switch hope this helps
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Old March 19th, 2013, 09:43 PM
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I thought that last year. When I tore it down I found that one of the nylon adapters was cracked. Seems to be fine this year with a new adapter. That said, I am very happy with my xle-4040's
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Old March 19th, 2013, 11:09 PM
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I'm not sure what the problem is at this point. I took it apart and its not broken adaptors. I will be getting new o-rings and the seals on the membranes were new a month ago. It would be nice if it was weak o-rings, but Murphy's Law says it'll probably be a membrane problem.

Everybody I've heard from or spoke to has suggested the XLE's or to look into the H2O Innovations 4" membrane. The NF270's seem to have fallen out of favor with most folks. I guess I'll have to start looking for these membranes and figure out what the cost will be, just incase its not the o-rings...

Steve
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Son & Father operation
2.5'x10' woodfired, raised flue evaporator
24'x40' sugarhouse
Homemade arch, hood & pre-heater. Welded Lapierre pans.
Airablo R.O. machine in the basement
Assortment of bulk tanks
Ford F-350 4x4 sap hauler
And strange looks from some neighbors...
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Old March 19th, 2013, 11:56 PM
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atlantic ro is were you get the xles i think they were 260.00 a piece h20 were around350.00 a piece
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Old March 20th, 2013, 04:07 AM
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I got xles last week from Atlantic for $223 each plus shipping which was $17.90 on two. Here is a site. http://www.atlanticro.com/FTP.pdf. Says for dealers but that is the price I got.
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About 900 of my own and sap from another 1200
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Old March 20th, 2013, 07:18 AM
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all things considered, xle's from atlantic are the best bang for the buck. I bought H20 this year, but dollar for dollar the xle's were the better deal.
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Old March 20th, 2013, 03:05 PM
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how are h20s flows compared to the xles
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