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Old 08-06-2010
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I've used the Katadyn/Pur watermakers and they're pretty good. I'd point out that any watermaker installation should have a separate tank for the RO water and that the RO membrane will be damaged/destroyed if it is exposed to chlorine bleach of any kind, so back flushing the RO membrane should only be done with distilled, spring or RO water.

The tank should have a check valve and transfer pump that allows you to move the RO water to the other freshwater tanks aboard the boat. Having the transfer pump hooked up to a hose is useful for filling jerry cans and bottles.

Also, getting a larger watermaker and running it every few days instead of a smaller one that is run every day makes a lot more sense and the amount of water you use/discard for back flushing the RO membrane will be a smaller percentage of what you make.

Try and get a watermaker that uses industry standard water filters to help keep the cost of maintaining it down.
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Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

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