I'm not the expert on sanitation system design so you should probably consult Peggy Hall, Nigel Calder or Don Casey's books. I can share my design but it's by no means a professional opinion and only worth what you're paying for it :)
I'm on the great lakes, no overboard discharge so my requirements are also different than yours. My head is to starboard just aft of the v-birth. The intake seacock is located just aft of the head under the starboard side settee. The holding tank is located under the v-birth and is bow shaped. I put all of the hose connections on TOP of the tank so that they don't leak. There is a pickup tube inside the holding tank that connects to the pump out hose. I did not plumb in any siphon breaks because I keep the thru-hull closed at all times except when the head is being used, which is very rarely. I may install a siphon break from the head pump to the toilet at some point, maybe this winter, just for peace of mind. This past summer I was pressed for time with a cruise planned and not enough time for entire project list. The hose run from the toilet to the tank is uphill unfortunately so I make sure to flush a lot of water through at the end of a day's use of the head to push everything into the tank. My vent is 1" but shrinks to .75" part way along because I discovered a limitation in the size of hose I can fit through a part of the bulkhead while doing the project. Pretty standard and works very well so far. Tank is 20 gallons and on a recent ten day cruise with just the two of us we pumped out twice. We put a lot of water through with each flush. Still new at this washroom on a boat thing and paranoid. Steve, Suhana, C&C 32 Toronto On Tue, Oct 22, 2013 at 10:22 AM, djhaug...@juno.com <djhaug...@juno.com>wrote: > Steve, > Great info! got any pictures or diagrams? > > I am considering the mock up. I think you're right, it is the only way to > make sure it will fit. > > I'm seeing all kinds of diagrams on line. Some have a loop and some do > not. One guy claims he had a tank made by ronco in which he had the inlet > to the tank installed low with an internal stand pipe. This would take the > place of the loop. He put the tank directly behind the head and ended up > with very short hose runs. I really like this design. It seems simple, > eliminates all the hose and vented loop in the head compartment. It looks > much cleaner, allows for a gravity drain and gets the pump-out fitting on > the side deck. The one on the boat currently was installed right next the > the mast and is labeled "water" and whoever installed it hacked it and > caused spider web cracks in the gel coat that travel several feet. > > My biggest concern with this design is whether or not I can get a tank to > fit. I'd probably have to cut out the base of the storage compartment and > commandeer that space. So, this is starting to sound like more of a > project than I want it to be... I could use the same location as the > existing bladder but, then these is no real way to empty the tank without > another pump that I can think of. Then the cost goes up and the system > becomes way more complex... > > Here is a diagram of what I was thinking of... > http://sdrv.ms/18Gs2FG > > > ---------- Original Message ---------- > From: Stevan Plavsa <stevanpla...@gmail.com> > To: cnc-list@cnc-list.com > Subject: Re: Stus-List New Head and holding tank system. > Date: Tue, 22 Oct 2013 08:33:31 -0400 > > My original tank was made by Kracor. I just went through this exercise > last season. The kracor tank for my boat is still available from Kracor but > they wanted $700 plus shipping .. and shipping to Canada would have been > over $100. Ok. Next option? > > I had removed the old stainless holding tank (some PO had replaced the > original kracor with SS) because it was leaking when I got the boat. Gross. > First job I did on the new boat. Gross. > > Anyway, plastic-mart, yup .. I found a 20 gallon holding tank that fit in > the bow perfectly! > Total broke down like this: > Order Items > --------------------------- > Qty: 1 - �20 Gallon RV Waste�Holding�Tank - (S-H2020-B (bow)) Price Each: > $200.99 > Build a Tank - I will submit a technical drawing with fitting locations > Qty: 1 - �Holding�Tank Pump-out Kit - (DT-30) Price Each: $47.99 > --------------------------- > 2 Items > > Subtotal: $248.98 > Tax: $24.30 > Shipping: $54.74 > Total: $328.02 > > > The $700 price for the kracor was just the tank, no fittings etc. I'm very > happy with the plastic-mart tank and the service was excellent. > > I took measurements from several of the online tanks that I thought would > fit and then mocked up the tanks with cardboard and then checked for fit on > the boat. I'm glad I did this it worked out perfectly. Do consider mocking > up a cardboard tank if you have ANY doubt about fit. > > Good luck, it's a dirty job. > > Steve > Suhana, C&C 32 > Toronto > > > > > On Tue, Oct 22, 2013 at 6:59 AM, djhaug...@juno.com <djhaug...@juno.com>wrote: > >> I'm not really sure what the banana would do... �Lol >> >> I have thought about the porta potty and then thought the composting >> toilet would have been a better idea. �I'm still not completely convinced >> that it isn't. �It is an easy install and for the amount of time we need >> it, it may well be a good solution. �However, it grossed out the admiral. >> �So, I'm on to this solution of a good holding tank design. >> >> >> T-Mobile. America�s First Nationwide 4G Network >> >> ----- Reply message ----- >> From: "bobmor99 ." <bobmo...@gmail.com> >> To: <cnc-list@cnc-list.com> >> Subject: Stus-List New Head and holding tank system. >> Date: Mon, Oct 21, 2013 9:51 pm >> >> >> I'm mainly a daysailor who has so far avoided the poo issue. If I were to >> forgo my very comfortable bed and spend a night aboard Ox, I would first >> try to address the poo problem at the source - with bananas. Beyond that, >> I'd go Porta Potti and deal with it. >> Bob M >> Ox 33-1 >> Jax, FL >> >> >> On Mon, Oct 21, 2013 at 11:27 AM, djhaug...@juno.com >> <djhaug...@juno.com>wrote: >> >>> Okay guys, >>> � >>> I'm planning a new waste system. �I'm going with the Raritan PHC head >>> and a new holding tank. �I currently have a very old Jabsco head and a >>> bladder holding tank. �I really don't like the bladder. �It has worked okay >>> but, one day it will fail and it will be disgusting! �I just want rid of >>> it... >>> � >>> I'm looking for ideas on the design. �i.e. �Where to install the tank >>> and how to pipe it. �I've been reading and I was thinking to try and >>> install about a 16-18 gallon tank, that conforms to the hull, behind the >>> head. �However, after a closer look on Saturday, I'm not sure there is >>> enough room there. �I was kind of hoping to install it there in order to >>> pipe up a gravity drain for when I'm in an area where that is possible. >>> �This would also keep the hose runs very short and I could easily vent and >>> pipe the pump-out fitting in the side deck above. >>> � >>> Of course that would have the need of piping up hill to get into the >>> tank and make it a bit harder to clear the waste from the hose with every >>> flush. �Then I heard it might be better to have the waste run downhill to >>> the tank. �That would create the need of pumping overboard if I were in an >>> area that allowed it and the need of another pump. � >>> � >>> I'm not exactly sure how the pump-out system works when having it done >>> at a pump-out station. �Is it a fitting that attaches to the deck fitting >>> and sucks it up the hose or, do they run a smaller hose down into the tank >>> and suck it directly out with their hose? >>> � >>> Anyway, �As always, any and all advice, insights and colorful comments >>> are appreciated! >>> � >>> Danny >>> Lolita >>> 1973 Viking 33 >>> Westport Point, MA >>> >>> _______________________________________________ >>> This List is provided by the C&C Photo Album >>> http://www.cncphotoalbum.com >>> CnC-List@cnc-list.com >>> >> >> _______________________________________________ >> This List is provided by the C&C Photo Album >> http://www.cncphotoalbum.com >> CnC-List@cnc-list.com >> > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > >
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