If anybody has built a high volume RO (like 2 or 4 40" membrane’s tied together) let me know how it went. I’m trying to predict any challenges or bottlenecks in the flow before I get started.
I guess I’ll ask a more specific question…regulating the waste flow and therefore backpressure on RO membranes…any science behind it? I prefer my ez pure which has a needle valve to my other setup which has a gate valve since the former is more precise. How do I know which needle valve to get? Surely the size of the hole matters.
I measured the hole in my needle valve on the ez pure at 1/16", for now I’m planning on using the same size for my dual 4x40 ro build, we’ll see how it goes…
I’d be interested in what you figure out. I have a 4x40 in my rig. I’m getting about .98gpm on the permeate and a whole lot on the brine. I have a garden hose spigot on the brine side running to a sprinkler. I called CSM to try and get some info on how to set this up…they were techinically helpful but weren’t really able to give me the specs I needed for the brine flow. Right now…I’ve been adjusting mine until the TDS on the product is lowest.
I also got a permeate pump that runs on the brine water…should be interesting to see what that does.
I’ve got one form simpole works great off water pressure no pump needed runs through 300 feet of hose
Whats your input pressure? Your setup looks pretty much identical to mine minus the tank and pressure washer. I’ve got 65psi at best.
Well I bought two 4 x 40 RO membranes and my 5 figure window contract fell through so now I don’t need them. I’d like to get $180 per, plus shipping. They are unopened still in packaging. These are 2500 gpd low pressure membranes, no housing included.
Where do you live ? Are
They axion ? Hf 5
Sent from my iPhone using Window Cleaning Resource killer job
Back in 2009 Wow! How old is your system design?
