When I rebuilt my fresh water system I used PEX tubing and fittings,
which seems to be the standard for RV and Marine use these days. Note,
however, that some of the old grey tubing was left in place, since
replacing it would involve some deconstruction of the boat that I didn't
want to get into. The grey polybutylene has held up fine for 32 years
now, and I think if it was going to fail it would have. I left it
attached to the fresh water tanks, and it runs under the cabin sole, and
thus has been exposed to some pretty nasty stuff. The small PEX
You can see some pictures at:
<http://www.wbryant.com/StellaBoat/Projects/plumbing/new/index.htm>
There's nothing wrong with Marelon below the waterline. White PVC
(schedule 40) is thinner than the Grey (schedule 80) PVC, and I would
avoid the white below the waterline. Personally, I would avoid all PVC
on raw water fittings below the waterline. However, they were on my
boat when I bought it -- but my boat also had *bilge pump* hose for the
cockpit drains, so whoever put that together was from an alternate
reality. I replaced the PVC with bronze and the hose with good Trident
hose, and sleep better.
Wal
Josh Muckley wrote:
My boat is outfitted almost entirely with the original fresh water
plumbing, "qest" grey tubing and compression fittings.
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