Flexible water tank question

[Cspirit]

I have a Westerly Corsair with a 100 litre tank under the aft cabin berth, plus a 200 litre tank under the port saloon berth, both constructed from stainless steel. The tank under the port berth is now leaking badly and beyond repair. Options, of course are (i) a new custom made plastic tank or (ii) a flexible tank from Plastimo or similar. My question is this:

With the current set up (which I don’t wish to change) the water filler supplies both tanks with the lower saloon tank filled via the aft tank. The saloon tank (the one that must be replaced) has a breather at its aft end and an inlet/outlet at the forward lower end. I know that the Plastimo tanks do not need a breather and my assumption is that the Plastimo tank outlet can be used to both fill the tanks and then act as an outlet to the taps as is the case with the current stainless tank. Am I correct in this assumption?

 

[neil_s]

That's what I do - although my tanks are not as large as yours. It does take some thinking about, but the tanks collapse as they empty so don't need breathers. I take the supply for the taps from the junction between the two tanks. One difficulty is that if you use water purifiers, you can't just tip them in and then fill up with a hose pipe, because the water will wash all the purifiers into the end tank and leave none for the first tank. I fill up with jerricans, adding Aquasol to each can full.