[C320-list] Hoses for toilet

[Charles Munro via C320-list]

I have been trying to work out how to access and inspect the holding tank vent hose connection to the through hull vent. It seems that I have to remove the vanity cupboard above the head. To. do this firstly seems to require the removal of the two toilet vented loops and to push the hoses back down to allow the cupboard to be removed? Is there an easier way ?
Charles Munro
Sabi Star #1011 2005

Sent from my iPad

[Greg Arnold via C320-list]

Charles,

I have a boat of similar vintage to yours.  What you describe seems
accurate.  I don't know about the situation on older boats.

I think the best plan is to remove the hoses and the vented loops from
the cabinet/cupboard/medicine chest.  Then, remove the cabinet.  Working
through the opening, glue two wood blocks to the hull, then screw the
vented loops to them and reattach the hoses. This way, in the  future
you can easily remove the cabinet.  Also, the hoses no longer are in the
cabinet so you can store stuff there.

Once the cabinet is removed, you will find that the pumpout hose
essentially blocks access to the vent hose and the vent.  At this point,
you may feel like giving up.  However, there is an easy way to remove
the hose and the vent despite the poor access.

First, remove the vent hose from the fitting at the holding tank. Then,
go outside the boat and unscrew the visible part of the vent below the
toerail (yes, you can unscrew it from the outside). Then, from the
outside, push the remaining part of the vent inside the hull.  Go back
inside the head, locate the vent hose, and give it a good pull.  The
hose and the remaining vent fitting should come out.

The next problem is that the vent is so close to a liner that you
probably don’t have room for the barbed end of a larger vent.  The
solution to this and the access problem is to drill a new larger hole a
few inches aft of the original vent.  Access to this new hole from the
head is very easy.

What size of new vent to install?  On my boat, the vent hole in the
holding tank is 3/4" female NPT.  The actual diameter of the opening is
1.050".  Catalina did not take advantage of this large hole, but instead
used a 3/4" NPT x 5/8" barbed fitting with a 5/8" hose that runs to a
5/8" vent below the toerail.  This vent has a couple of minuscule
openings for air to escape or enter.

It makes sense to upgrade to a 3/4" NPT x 1" barbed fitting at the
tank.  Attach a 1" hose, and run it to new 1" mushroom vent in the new
hole you drilled.  Your holding tank ventilation now has increased
one-hundred fold.  Plug the original vent hole.

This describes my plan – I have not actually gotten around to
implementing it yet!

Greg
2005 C320 #1054
SoCal

[Charles Munro via C320-list]

Thanks Greg
A great description. Sounds like a project for next winter. June & July in Sydney !!
Charles
Sabi Star

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> On 21 Sep 2024, at 1:17 PM, Greg Arnold via C320-list <c320...@lists.catalina320.com> wrote:
>
> Charles,

[Joe Grande via C320-list]

I believe it's right behind the mirror cabinet right behind the toilet?

Joe Grande
Seattle
Whisper #772, 2000


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________________________________
From: C320-list <c320-lis...@lists.catalina320.com> on behalf of Charles Munro via C320-list <c320...@lists.catalina320.com>
Sent: Friday, September 20, 2024 6:27:52 PM
To: C320...@catalina320.com <C320...@catalina320.com>
Cc: Charles Munro <charles...@gmail.com>
Subject: [C320-list] Hoses for toilet

[bruceheyman via C320-list]

Hi Charles,It has been a very long time since I did this job and replaced all of those hoses with proper sanitation hoses.   It is very much a challenge to get access to behind the cabinet but I thought I'm sure I took it all apart because I replaced all of the hoses.BruceSomerset San Pedro year 2000

[Dave Hupe via C320-list]

Charles-  on my 1994 boat, i removed the medicine cabinet,  as well as the vertical long back panel above the shelf.  This allows very good access to the pump out deck fitting and the vent fitting and hoses. It was necessary to disconnect the electric plug in that upper panel on order to bevable to pull the panel off.
I will send some photos directly to your email later today. 
Dave Hupe 
1994 C320 #32

Yahoo Mail: Search, Organize, Conquer

On Fri, Sep 20, 2024 at 9:29 PM, Charles Munro via C320-list<c320...@lists.catalina320.com> wrote: I have been trying to work out how to access and inspect the holding tank vent hose connection to the through hull vent. It seems that I have to remove the vanity cupboard above the head. To. do this firstly seems to require the removal of the two toilet vented loops and to push the hoses back down to allow the cupboard to be removed? Is there an easier way ?

[Rich via C320-list]

Hi All,

Great discussion on how to update the black water plumbing and venting.

We purchased our 1995 SV Destiny 3 seasons ago, with many projects to tackle. Last season we were bothered by the head odors, and after some research found a product called “Sew Clean”. It is not a black water treatment, it is a black water system cleaner designed to purge uric scale which is source of odor. We used this product last fall following the instructions with good results. Essentially you pump a quart into the head and let it sit in the hose between the head and tank for awhile, then fresh water flush it into the tank and leave it there for another couple hours, then pump out the tank with a fresh water flush.

We will probably repeat use every-other fall since after a year the odors are still minimal. Note we cruised about 7 weeks this season, and only use the head for #1. We are in the Great Lakes so fresh water flush.

Defender lists this for about $25 for a quart, which is the amount we used. This may be a less invasive first step to try.

Rich and Nan Allen
SV Destiny
1995 #265

>
> On Sep 21, 2024, at 9:04 AM, Dave Hupe via C320-list <c320...@lists.catalina320.com> wrote:
>
> Charles- on my 1994 boat, i removed the medicine cabinet, as well as the vertical long back panel above the shelf. This allows very good access to the pump out deck fitting and the vent fitting and hoses. It was necessary to disconnect the electric plug in that upper panel on order to bevable to pull the panel off.

[Ian Neale via C320-list]

Hi,

We have used Sew Clean as well with good results. Definitely a noticeable improvement.

Ian Neale, 1122.

Sent from. my iPhone

> On 22 Sep 2024, at 2:05 AM, Rich via C320-list <c320...@lists.catalina320.com> wrote:
>
> Hi All,

[Dave Hupe via C320-list]

I did an extensive job in 2018 of replacing all of my waste tank sanitary hoses (including the waste pumpout hose), the intake water lines and thruhull valve feeding the toilet, and replacing the tank vent hose.  My boat is 1994, so this may not be the same for you.
The medicine cabinet removal was very easy.....just remove the screws around the cabinet perimeter and pull the cabinet straight out.  Access to the higher cutout for the waste pumpout hose and fitting is much more difficult.  It required removing the cover panel that is above the shelf over the medicine cabinet.  To do this, I first had to remove the boatboard shelf strips, remove the teak wiring cover behind the fluorescent light, and remove the mount screws of the light fixture (first must remove the frosted lens cover, bulb and shield behind the bulb) so it can be shifted out of the way.  Next, turn off all boat power and remove the electric outlet cover, disconnect all wires from the outlet (tape/mark the wires where they mount for reference), then completely remove the outlet.  
Lastly, remove the screws from the back cover panel itself and try to pull/pry it gradually out/off.  As you do this, feed the wires back into the hole in the wiring outlet box.  My panel was very difficult to remove because I believe the plywood of the panel was slightly swelled from past moisture problems.  Once removed, I wound up removing the perimeter rubber trim on the panel (just stapled), trimming 1/4 inch off each of the wood ends of this panel, then reinstalling the rubber trim before reinstalling the panel.....much easier to put back on than take off!
Once the back panel is removed you will see a high cutout in the fiberglass that exposes the waste pumpout hose and lower part of the deck fitting, as well as the waste tank vent hose and the vent fitting.
I have photos I can send indidually if anyone wants/needs them. 
Hope this helps.
Dave Hupe
1994 C320 (#32)

Yahoo Mail: Search, Organize, Conquer

On Fri, Sep 20, 2024 at 9:29 PM, Charles Munro via C320-list<c320...@lists.catalina320.com> wrote: I have been trying to work out how to access and inspect the holding tank vent hose connection to the through hull vent. It seems that I have to remove the vanity cupboard above the head. To. do this firstly seems to require the removal of the two toilet vented loops and to push the hoses back down to allow the cupboard to be removed? Is there an easier way ?