Reverse Osmosis Tanks

So that you don't have to wait for the pure water from your reverse osmosis system to be available, PSI Filters offers a range of reverse osmosis storage tanks which the system automatically fills, and then keeps full so there's always pure water on hand for you.

RO Tanks4.2, 9 & 12 litre reverse osmosis storage tanks, the 9 litre tank is supplied as standard with the 4.2 & 12 litre tank optional. The smaller tank is suitable for persons with limited space. The 9 litre tank is 390mm high and 240mm in diameter, 12 litre tank is 390mm high including ball tap and 275mm in diameter. The 4.2 litre tank is 330mm high including ball tap and 205mm in diameter. Both tanks are happy installed on their side. How the tanks work click here
Reverse Osmosis Tanks12 & 4.2 litre tanks side by side How the tanks work click here
12 Litre RO Tank12 litre tank installed on it's side How the tanks work click here


  • Hi Stephanie and Peter,   Thank you for the replacements filters in recognition of loyal service.  It is very much appreciated.  We have always highlighted your reverse osmosis water filters when we have sold our other 2 houses where we...

    Jacqui, .
  • Hi Peter/Callum Just wanted to say a big thanks for all your help, support and knowledge. I am super pleased with my counter top filter and am so grateful that I followed the brilliant reviews online. With you guys you get honesty and a genuine...

    Ruthie, .
  • Peter, "Shame faced husband" ;-) & I were incredibly impressed when the new part & replacement filters arrived today. All installed it looks great & husband proof. Thanks so very much! We are thrilled. You can use this as an unsolicited...

    R Golding, .
  • Thanks for supplying me with the filter. I installed it at my mums house in Biloela. (out west) The water out there is half bore half from a big dam, so the water must have a lot of minerals in it. My mum was pretty sceptical but once she tasted...

    Wulf, .