thanks guys - i stumbled accross the betavalve website before, thanks for the links luke, it is a bit over the top for what i need for a ro system, but its good quality and makes water much faster for me- im sure it will help1000 ltrs in 1 hour and 40 minutes is much better - my current 300gpd system does that in about 72 - 96 hours. I think i will hold onto it for a while and use it,- im sure i could get more than what i paid for it if i did sell it eventually. In the mean time im going to hook it all up in my garage.
did you get my email jonrob? Luke
http://i1.ebayimg.com/04/i/000/cb/9e/efb8_3.JPGsounds good andy- from your picture it looks the same unit- but mine just has the tank and booster pump too to run off domestic supply. It has the back wash / flush feauture built in so you just push a button - are these 4040 ro's? on this system? - they look longer to me? if so i should be able to find suppliers for new ro membranes quite easy, not cheap though.