4021 production rate

I might have to downsize my water production to a more compact solution. What kind of real life production are you getting from 4021 ro’s. I’ve got good pressure/flow, tap TDS is 280-300ppm. Currently have a 4040 doing about 2lpm. I generally use around 350l a day very occasionally 700 but can handle that with storage.

First video I made so not so good but shows production with very good pressure from tap. However looking at your results of your 4040 it's either on it's way out or your pressure is not that good as even at low pressure I get more from a 4040.

Then again that is with a HF5 membrane so if you have a higher pressure membrane then production will be less

Maybe my pressure isn’t so good. Although I am using one of those cheapy membranes that Collins water products have been selling on eBay...

so perhaps if I do go 4021 a low pressure membrane might be a good move! 

If I could get a litre a minute that’d comfortably meet my needs.

I have got a 4021 ro from daqua. My water pressure is around 60 psi and get a litre of water in just under a minute.

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