Which Ro Unit?

[FiSh123FiSh]

So go for a 100gpd? Gotcha.

How long can you store RO water for? In metal jerry cans or PVC tubs?

 

[drsquirrel]

In hindsight, I know that now I mainly meant "only" compared to the rated throughput.

Makes me wonder what their (manufacterers) basis on this is, I did think about the pure+waste=rating although if that was the case I would be running at least double 75.



Storage.
Use an airtight container - the way I understand, the water is so pure that it absorbs gasses/pollutants from the atmosphere (and the container) which is also a reason to use a "food safe" container whereever possible.

I wouldn't use metal, salt water is corrosive (assuming you will mix in this).

If you want to mix in it, you will want something with a lid.

"Recycled Water Butts" on ebay sells 55L and 220L food safe butts. Delivery online is a pain but in my research so far, they're still cheaper than buying any old (recycled plastic - which isn't classed as food safe) bin from a DIY place.


Do you know what your pressure is like? If it's high and you want to skimp then 50 might be okay, but consider how much everything else cost, might as well get a 100.

 

[FiSh123FiSh]

Perhaps this one then? Unit 2

 

[drsquirrel]

Perhaps this one then? Unit 2

You'll notice that doesn't have a second pod on the top, that (missing pod) is the DI resin container.

Instead you have 3 prefilters apposed to the 2 of your previous link.

Here is a 3stage+DI 100GPS
http/www.osmotics.co.uk/4-stage-100-gallon-per-day-reverse-osmosis-system-p-117.html?cPath=46_81


They have a 3+DI 75GPD if you want to go a middle ground.

 

[FiSh123FiSh]

Oh I see, I did look at that one. For some reason I chose the other one.

I would also need to buy a hose adapter if I want to connect it to a hose pipe?

 

[drsquirrel]

From what it says, these include pipe clamps.

Proper wording is "pipe saddle", which goes over a metal(copper) pipe and makes its own hole, once it's on it isn't supposed to come off. The waste one is larger and meant for the drainage sized pipe work under your sink.


You will need a separate adaptor if you are going to use a hose.

Assuming "hoselock" system...

This - http/www.osmotics.co.uk/garden-hose-adaptor-p-146.html?cPath=1_51

AND this - http/www.osmotics.co.uk/john-guest-12-bsp-tap-connector-for-14-tube-p-266.html?cPath=1_51

 

[nick87]

Yes you will need the right adapters, the unit will come with a self peircing clamp for use on you cold water pipes.

I wouldn't use metal containers either, as said pure RO is like a sponge and will pull in everything and is best stored in food grade jerry cans.

 

[FiSh123FiSh]

Okay, I put the tap connector on my list as well as the hose adapter.

I have also seen some water butts on ebay. (the food safe ones)

Water Butt

 

[ben1987]

that water butt looks fine, some of them on ebay have been used to transport fruit and stuff so it may need a clean out.
also be careful with usuing it oustide in the winter, dont want it to freeze up

 

[FiSh123FiSh]

Thanks Ben.

Yeah this one seems pretty devoted to holding RO water and the seller seems quite proffesional about how he does things. "Brush scrubbed not jet washed" I wouldn't have known it would make a difference lol.

I think I'll be keeping it in the garage.

 

[pmb_67]

Sad to hear RO Man having tough time, they've always been great on service for me. I have their 75gpd 3-stage + DI setup, with 2 75gpd extension kits - this means the waste water after the first membrane goes through another 2 membranes before going to the drain (shared with washing machine) while the product water from all 3 membranes gets deionised in one go. End result is I get over 200gpd, or put another way can re-fill my 90 litre saltwater make-up tank in about 3 hours.

Some keys to success in RO production:

1) Flush your membrane after every use - lasts longer

2) Fit a pump to ensure adequate pressure on your water supply (our mains pressure is pants)

3) Change your pre-filters when you see the flow rate drop

4) Change your DI resin when product TDS starts to rise

5) Order your next set of new filters and resin when you fit a set, so you're not desperately waiting for the new ones when you actually need them. And you'd be ok if your usual supplier went under

6) If your tank is a long way from your RO system and you use a top-up system, buy enough 4mm hose to pipe RO product water straight to it - saves a lot of carrying and spilling!

Hope this helps,

Paul

Edit: I recommend fitting supply (red) hose to a washing machine style tap on your domestic plumbing - easier to leave behind if you sell your house! And less leaky than the self-tapping thing supplied with the system. Just need to buy the appropriate adaptor for a couple of quid.