On Fri, 16 Feb 2007 23:46:47 -0600, Don W
wrote:

You can do it! But you will have to buy the
membrane and filter housings. Remember that if
you are going to pressurize the whole thing the
pre-filter housings have to be stout as well. Of
course, I don't know why you would do that... ;-)

Don W.

Oddly the membrane seems to be the cheapest part. Well next to the
pre-filters. Smallest membrane I found was a 6 GPH for $147. Pressure
vessel for same was around $400. Okay, so 6 GPH is workable at 12V.

Gonna' rest my brain... Then pick brain of an oilfield friend quite
familiar with high pressure pumps and visit the two nearby oil field
RO manufacturers.

Rick