[C320-list] Raw water intake

[Scott Thompson]

To clarify, on the older boats there is a single through-hull with two 
hose barbs that handles both the shower drain pump, and also is the raw 
water intake for the head.  Both connect to the same valve, directly 
under the head sink.  There is a separate through hull for the head sink 
drain in the same location.  In other words, two through hulls for three 
hoses are under the sink.  If you don't look carefully you might not 
notice the third connection point.  I'm not sure how the Mark II models 
are plumbed.

Hopefully you do not have a through-hull outlet with nothing connected 
to it as a result of some ad hoc plumbing mods.  If so, you should find 
an effective way to block it so that someone doesn't accidentally sink 
the boat, even if you choose to keep things plumbed for fresh water 
flushing.

Also, there is no harm in plumbing the head to a DEDICATED fresh water 
supply that is not physically connected to the drinking water system. 
The health hazard arises if you use the aft tank for double duty -- both 
drinking water and flushing.  Once you start using it for flushing you 
will need a thorough sterilization if you want switch it back.  There 
are a number of safe methods described on the web site and the archives 
that let you flush with fresh water without physically connecting the 
two systems, thus giving the best of both worlds.  They key is to take 
the fresh water from a sink drain rather than directly from the fresh 
water supply.

-- 
Scott Thompson
Surprise, #653

Jeff Hare wrote:
> If that's the case REMOVE that connection immediately!  That is not standard and there should never be any connection between waste systems and fresh water systems since bacteria can and will make its way along that feed line into the fresh water system.  
> 
> Normally the raw water intake is Teed into the shower drain through hull,  but a good alternative is to Tee into the head sink drain through hull.   That allows using fresh water flush by filling the sink first.  
> 
> -jeffh 
> 
> 
> ------Original Message------
> From: wflowe3 at netscape.net
> Sender: c320-list-bounces at lists.catalina320.com
> To: c320-list at catalina320.com
> ReplyTo: C320-List at Catalina320.com
> Subject: [C320-list] Raw water intake
> Sent: May 18, 2009 10:52 AM
> 
> I recently purchased a 2008- 320 and I'm trying to find the seacock for the raw water intake to the toilet.? It appears that there isn't one but instead the head intake is plumbed to my aft water tank. Is this common?
> 
>