[C320-list] Through-Hulls

[Greg Flanagan]

Under my sink in the head I have three sea cocks. A large direct outflow for the head—illegal in the US and not used on my boat. The second one is a outlet for the sink drain and the third one is an outlet for the water sump pump also located here. This pump has an inlet connected to a Y valve which switches between the shower sump pit and the refrigerator sump pit. 

Cheers,

Greg
Hoop Dancer #1076 
Sidney, BC 

> On Nov 1, 2019, at 9:11 AM, SCHWARTZ <schwartz781 at optimum.net> wrote:
> 
> Ahoy....Third valve is head basin drain on my #245.....Joe
> > On October 31, 2019 at 7:24 PM David Veeneman <davidv at veeneman.com> wrote:
> > 
> > 
> > I am taking inventory of the through-hulls on the Catalina 320 I bought a few months ago, and I’ve come across a couple of items that puzzle me. I have a through-hull that I can’t identify, and a Y-valve that I don’t understand.
> > 
> > In my aft cabin, on the starboard side of the cabin, I have two access doors, a large one and a small one. Both provide access to through-hulls with seacocks. The small door accesses three through-hulls. Two are labelled as the head inlet and the shower sump outlet. The third is unlabelled. Can anyone tell me what this third through-hull is? Here’s a picture of the layout:
> > 
> > 
> > 
> > It’s the front through-hull that’s unlabelled.
> > 
> > The large access door opens to a y-valve that appears to connect to the head outlet. A hand-drawn diagram on the bulkhead indicates that one y-valve setting directs directs the output to the holding tank (the current setting), and that a second setting is ‘off’. But the other hose from the y-valve leads to a through-hull with a seacock (which is closed). Here’s a picture of the y-valve:
> > 
> > 
> > 
> > 
> > The y-valve looks like its handle has broken off, so it looks like I’m going to have to replace the valve.
> > 
> > I understand the current y-valve setting—the head evacuates to the holding tank, which I can either pump out (which is what I do), or I can run its contents through the macerator and dump them in the ocean (which I haven’t done). I don’t understand the y-valve, which seems to give me the additional option of simply dumping the head directly into the ocean.
> > 
> > I can’t see any reason why I would use the y-valve setting that evacuates head output directly to the ocean. Is there a reason I would want to do that? Any light that you can shed on this issue would be greatly appreciated.
> > 
> > Thanks for your help.
> > 
> > --
> > David Veeneman
> > Dana Point, CA
> > SV Adelante, C320 #131
> > 
> > 
> > 
> >