Brs Rodi 150gpd upgrade

kwandrsn · Jun 10, 2015

Ok I have the brs 4 stage 75gpd value plus system which I converted to a 5 stage to run 2 carbons. Im wanting to add the 150gpd upgrade. I read somewhere I need to change the flow restrictor or something...

What exactly do I need and how do I change it? Thanks

redfishbluefish · Jun 10, 2015

With that upgrade you are running the membranes in series, so you use the same flow restrictor.....no change.

kwandrsn · Jun 10, 2015

Oh ok I was being told I needed to change it

redfishbluefish · Jun 10, 2015

HERE's a video for you.

kwandrsn · Jun 10, 2015

Ok cool.... my restrictor looks different though. Mine has the flush valve

kwandrsn · Jun 10, 2015

Mine is the 400ml flush valve

kwandrsn · Jun 10, 2015

From what I read they recommend the 550 but my system came with the 400.... the 400 has lower waste ratio and the 550 has higher rejection......

Another option cause I will be getting my booster pump in the mail tomorrow is I can buy the aquatec 500 auto flush valve

AZDesertRat · Jun 11, 2015

Consider the 150 GPD upgrade an increase in GPD, you can make water faster, but it should not be considered a water saver.Since you are sending the waste or concentrated brine from the first membrane into the second it is even more important to keep the waste ratio up so the membranes do not scale up and fail. Do yourself a favor and buy a capillary tube flow restrictor and trim it to fit your exact water conditions. Membranes are flushed via the waste ratio, not with flush kits have no documented proven value other than to lighten your wallet and give you a warm fuzzy feeling.

kwandrsn · Jun 11, 2015

Ok will do.... not worried about saving water.... just want to make it faster and have it tuned good

AZDesertRat · Jun 11, 2015

I get 150 GPD out of a single 75GPD RO membrane with an Aquatec 8800 booster pump at 95 psi. The kicker is the rejection rate is much better with the booster since membranes work better the higher the pressure is, I am at 99.4% rejection rate which means my TDS goes from 600+ to between 2 and 3. With my old dual membrane system it averaged 13-15 TDS so DI did not last nearly as long.