As usual, mine is probably more complex than most. I have 3 tanks and a
watermaker. There are also 3 manifolds. The first is the supply
selector and has 4 ball valves one for each tank and one for shore
supply. It is then routed to the pressure pumps, a pair of 3 gpm Grocos
in parallel with one set slightly higher pressure than the other and a
left/right/both selector switch. That gives me some redundancy and in
the "both" position the lower pressure pump only turns on when the
primary can't keep up with demand.

Off the cold water pressure line is a transfer manifold with a valve for
each tank so that water can be moved around as needed for trim and balast.

The third manifold distributes watermaker product.

There is also a crossover valve (backed up by a check valve) to supply
fresh water to the washdown system pump when on shore supply.

My entire system is double clamped hose. If I had it to do over again I
would have seriously looked at Quest. Teeing in a branch line to a sink
or shower takes 16 marine grade hose clamps and that gets mighty expensive.

Aluminumhullsailor wrote:
Listers,

I have been working on a fresh water system to install on a 45 foot
cruising monohull sailboat. Does anyone know of any online schematics
or idea lists that may provide me with another line of thought? Any
books you have found helpful would be a good tip also? I will post my
schematic in a few days for comments.

D


--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com