Compact RO/DI


#22

Yeah, the one I had pre-wcr was on a little cart - it sucked because the wheels were so small that it was a pain to move through the dirt. It was a sidewalk only sort of trolley.


#23

Yeah but its a fine line how much can be put into a cart. A system like that is a price-point unit, adding an elaborate cart would drive the price way up.


#24

Just curious…why not a one membrane 21" ro design? I get that the largest production port on a 4x21" is 1/2" (at least that’s the limit ive seen) vs 3/4" or larger on the 40s so your production & flow should be less depending on source pressure & not factoring in a pump, correct? Also the limit at “peak” capacity for a 21" extra low energy membrane that ive seen is a little over 1000 gpd (roughly 40 gph which will be less than that “highest” limit usually… esp in cold weather, right?) vs 2500 for 40", but shooting for 1/2 gpm flow for a solo operator shouldn’t that be enough per day? So Ive wondered why its always 2 21" vs 1 40" (commercially made I mean)? I know you have much more experience with this as do others so just wondering if it has to do with efficiency of operating or something else.


#25

A 4x40 membrane will get better water flow than 2 4x21 membranes. It has to do with surface space on the membrane. Less 90 degree angles and larger hose also helps with water pressure on the membrane. 3/4 hose also helps.
Just like this one https://shopwindowcleaningresource.com/pure-water-systems/xero.html/
And this one https://shopwindowcleaningresource.com/tucker-fill-n-go-system.html


#26

We are working on a cart for the EZ-Pure caddy.

Pre-production model is being tested.

Comes with large wheels like the Tucker carts.

Shawn Gavin
RHG Products Company
www.rhgproducts.com
1-303-663-1779


#28

not enough flow


#32

it isn’t better or more preffered it more compact regarding height. it may be more expensive to maintain i have not researched the cost of replacing 2 vs 1.
the size of an ro deterimes it’s output


#33

@ATF I have customers using one 21 inch RO in front of the the Hydropower he was burning through bags in OK and wanted to save money


#34

it provides enough flow ? well hush my mouth!!!


#35

Thanks John. :slight_smile:


#36

Yes he has good flow and it lowers his TDS and saves his resin bags.


#37

verrrrry interesting


#38

Ken where did you get this info?


#39

online chris, is it wrong?


#40

To the best of my knowledge this system is only a prototype and not even in production.


#42

Cool, I’d be interested to see one when they are out.


#43

Are there any comparison charts that list all the RO/DI units with their specs?


#44

https://windowcleaner.com/waterfed-poles/understanding/purification/
If you look under the section 4 ways to get pure water its the best comparison we have. As for specs I can give you the individual specs on each unit. Basically you have units for one pole, 2 poles and 3 to 4 poles. They can produce from 1.5 gpm of permeate water to up to 7 GPM of permeate water.


#45

What specs specifically are you looking to compare? - I will put something together.


#47

Dimensions, weight, proprietary or non proprietary filters. Might be good to ask this question as a poll as more experienced users will have additional and/or more refined info needs.