My idea with these is to fit a smaller one INSIDE my 650 layflat tank.
Why?
Because I want to use the tank for pressure washing, and not waste resin by using DI water for the pressure washing. So, fill the pillow bag (100 litres or so) with pure (Separate outlet of course), fill the rest of the tank with tap water, pressure wash away and still have pure water left to clean the windows when I'm finished pressure washing,.. all without the hassle of an extra tank, extra frame, extra weight in the van,.....
Would it work?