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Reverse Osmosis

PostPosted: Sun May 17, 2015 2:41 pm
by Hill
Does anyone know anything about RO systems, the seam to range in price from $300 to 1k, I'm looking at adding an under sink system into my brew room.

Re: Reverse Osmosis

PostPosted: Sun May 17, 2015 3:07 pm
by bayshine
Ive got a boss 020 for about 3 hunge Mark and it makes the best water :handgestures-thumbupleft:
but with only 45 Psi mains Its incredibly slow :handgestures-thumbdown:
So I hooked it up to a pressure pump an now makes around 200lt in about 12 hours and I would waste about double that but I send that to the garden :handgestures-thumbupleft:

Re: Reverse Osmosis

PostPosted: Sun May 17, 2015 3:56 pm
by TheMechwarrior
Plenty of good RO units on fleabay mate.
You can get great units for under a grand that other suppliers have quoted $10k for. For most users ~$300 is going to get you a great rig.

Re: Reverse Osmosis

PostPosted: Sun May 17, 2015 4:50 pm
by Hill
Thanks mech, any chance you could post a link of one of the better units, what exactly makes them better, anything to do with speed

Re: Reverse Osmosis

PostPosted: Sun May 17, 2015 5:54 pm
by TheMechwarrior
Depends on your starting water quality.
If you are feeding potable water from a city water supply you aren't going to need a massive sediment filter for instance, just a 5um prefilter would be ample. Then a carbon filter.

Something like this mate: http://www.ebay.com.au/itm/310789084679 ... EBIDX%3AIT

Re: Reverse Osmosis

PostPosted: Sun May 17, 2015 7:55 pm
by Hill
that looks pretty good, do you know what the difference between that one and the ones with the bigger round storage tank

Re: Reverse Osmosis

PostPosted: Sun May 17, 2015 8:54 pm
by Hill
http://pages.ebay.com/link/?nav=item.vi ... 0917377914

This one comes with everything, would this be ok

Re: Reverse Osmosis

PostPosted: Sun May 17, 2015 9:22 pm
by TheMechwarrior

Re: Reverse Osmosis

PostPosted: Sun May 17, 2015 9:29 pm
by Hill
Yeah saw that one, is the pump worth having?

Re: Reverse Osmosis

PostPosted: Mon May 18, 2015 10:01 am
by TheMechwarrior
The pump is cheap to buy on it's own. You get a few extra filters in the 7 membrane version so pressure drop is going to be much higher, necessitating the need for the pump.
At least that's what I'm thinking.

I'll be getting a system very soon myself, likely this: http://www.ebay.com.au/itm/310789084679 ... EBIDX%3AIT

Re: Reverse Osmosis

PostPosted: Mon May 18, 2015 10:53 am
by hillzabilly
bayshine wrote:Ive got a boss 020 for about 3 hunge Mark and it makes the best water :handgestures-thumbupleft:
but with only 45 Psi mains Its incredibly slow :handgestures-thumbdown:
So I hooked it up to a pressure pump an now makes around 200lt in about 12 hours and I would waste about double that but I send that to the garden :handgestures-thumbupleft:

:text-+1: Boss-020,cannot fault them ,I run the waste water into a rainwater tank to use for cooling and on the garden,that was the only problem I had with RO units .cheers hillzabilly :handgestures-thumbupleft:

Re: Reverse Osmosis

PostPosted: Mon May 18, 2015 8:37 pm
by Hill
Thanks for all your help guys, I've got a good idea of what is needed now

Re: Reverse Osmosis

PostPosted: Thu May 21, 2015 10:11 am
by Hill
Picked up this from gumtree, $280 new in box. Should serve me well.

Re: Reverse Osmosis

PostPosted: Thu May 21, 2015 11:20 am
by hillzabilly
I got mine from Veba's aquariums in Fremantle ,to make sure I could get replacement filter's and membrain's easily ,you may need some extra line and fitting's,I got a tee fitting and a tap end fitting ,so I could have an extra line out to a large storage tank (60lt fermenter).and some extra line for ya waste water.cheers hillzabilly

Re: Reverse Osmosis

PostPosted: Thu May 21, 2015 8:28 pm
by Hill
Thanks mate, you've been s great help.