RO/DI Recommendations

[buckeye field supply]

grouper therapy;588556 wrote: Thanks I'm pretty sure I will not have that problem since there is check valve after the membrane and I'm on the upper limit of the pressure operating range.

All Ro systems should have a check valve in the permeate port - that check valve won't solve the issue. The problem I mentioned above will exist regardless of the feedwater pressure.

Russ

 

[grouper therapy]

Buckeye Field Supply;588559 wrote: All Ro systems should have a check valve in the permeate port - that check valve won't solve the issue. The problem I mentioned above will exist regardless of the feedwater pressure.

Russ

Not sure then why I have not had an issue with quick di exhaustion. I make about 65 gallons a week of rodi and the Di resin last 8-9 months. Is that not a pretty long time ? 0 tds out after di

 

[grouper therapy]

Buckeye Field Supply;588376 wrote: From any tank. Its a bit of a long story, but in short, the pressure tank "pushes" back against the membrane, and especially as the tank fills, the effective pressure on the membrane is very low, and the rejeection rate suffers significantly. So the TDS coming out of that tank will be relatively high, and you'll burn through your DI resin faster than would otherwise be the case. The retrofit to avoid this situation is pretty inexpensive and easy.

I don't have any interest in educating the competition, so if you'd like specifics, please contact us directly.

Russ
513-312-2343

Sorry about the reply did not see this earlier and I completely understand no worries. i will be contacting you for your kit. Thanks for your info

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[lilrobb]

Russ is a great guy, he educated me via email before I ever bought my first RODI kit.
Customer service right there!

Robb