[Public-List] holding tank vent

[Kris Coward]

I'll only find that if I find a use for the tank space so compelling as
to tempt me to open and remove the tank. As things currently stand, it
(and the associated hoses, deck fittings, etc) remain happily in place
in case seven-foot-itis (which I expect to catch in about 5 years, as
Xana approaches her teens and starts to demand her own compartment with
privacy) sees me selling Candy Cane to someone who's quite happy to
convert back to a flush toilet and let me keep the composting head.

Cheers,
Kris

On Thu, Mar 07, 2013 at 02:18:56PM -0500, Mike Lehman wrote:
> Kris
> 
> You will also find out that the pickup tube in your arrangement is
> an aluminum pipe which is probably badly corroded and riddled with
> holes...you will never be able to empty the tank under the
> floor...it was a bad design to start with.
> 
> 
> 
> ~~~_/)_/)~~ Mike Lehman ~~_/)~~~
> 
> 
> -----Original Message----- From: Kris Coward
> Sent: Thursday, March 07, 2013 1:29 PM
> To: Alberg 30 Public List -- open to all
> Subject: Re: [Public-List] holding tank vent
> 
> 
> That's quite the impressive rise. I've got one of the under-sole,
> integrel-to-liner holding tanks (which has fallen into disuse since the
> installation of a composting toilet), and remember that it didn't
> require that tall a sewage column up the vent and pump-out hoses to get
> the tank (and sole) to bulge visibly.
> 
> In fact, I can remember one time that I went to pump out, and kept
> getting nothing into the pump-out machine, and just losing pressure. Now
> the machine was a touch leaky under suction (fortunately this just meant
> that air seeped in, rather than anything seeping out), so I figured that
> there was perhaps a slight clog in my pump-out hose. I also figured that
> maybe I could dislodge it and force it through by flushing a few more
> strokes into the holding tank to build up back pressure in addition to
> the suction. A half-dozen strokes or so into trying this, I discovered
> that the problem was actually that the pump-out hose had disconnected
> from the deck fitting (and I'll leave it to you to infer just how I
> found that out)...
> 
> Cheers,
> Kris
> 
> On Thu, Mar 07, 2013 at 08:55:53AM -0500, Mike Lehman wrote:
> >This reminds me of a funny story. A couple in Florida bought a brand
> >new boat. After several months they went back to the broker and
> >complained that of a foul smell in the boat. The broker visited the
> >boat and asked then how often they pumped out the holding tank. They
> >replied that they have never had to empty and were very pleased with
> >the extra large capacity of the tank because it never seemed to fill
> >up. As it turned out the vent line for the holding tank was led up
> >into the mast all the way to the spreaders. When they removed the
> >mast to investigate the foul smell the mast was full of shit that
> >was overflowing the vent line.
> >
> >
> >
> >~~~_/)_/)~~ Mike Lehman ~~_/)~~~
> >
> >
> >-----Original Message----- From: John Boor
> >Sent: Thursday, March 07, 2013 8:23 AM
> >To: j_l_brown ; Alberg 30 Public List -- open to all
> >Subject: Re: [Public-List] holding tank vent
> >
> >On MAHSEER #380 the tank vented into the base of the mast this kept out
> >all water intrusion and the odor exited at the mast top, and for you smart
> >a#$@$ people it also was a secondary holding tank.
> >
> >John Boor
> >
> >>I vented it through the cabin side in the head, used a fuel tank
> >>stainless
> >>vent fitting. Â I angled the vent slightly aft as well.
> >>
> >>If you were wanting to use a one way valve on the vent, you could add a
> >>suction one way valve to the tank, they mount flush. power boats with
> >>carbon filters on the tank vents use them. Â
> >>
> >>I'd think about using a tank additive then, there's a good one that helps
> >>prevent most anaerobic growth issues, mostly used in commercial waste
> >>water treatment. Â Cheap, ok for environment and easy to use.Â
> >>
> >>Otherwise even the nicest tanks and hoses eventually stink.
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>Sent from Samsung Mobile
> >>
> >>-------- Original message --------
> >>From: Stephen Gwyn <stephen.gwyn at nrc-cnrc.gc.ca>
> >>Date:
> >>To: public-list at lists.alberg30.org
> >>Subject: Re: [Public-List] holding tank vent
> >>
> >>>I'd say the geometries are quite different if the vent is at the beam of
> >>>the boat instead of up on the bow.
> >>
> >>Yes.
> >>
> >>If a spot 6 inches below the rail at the beam is under water continuously
> >>,
> >>that's normal, you're just heeled. If your bow is under water
> >>continuously,
> >>you've got real problems.
> >>
> >>I must confess I took 2 hours getting ready to drill the holes for
> >>the vents. Drilling holes in test pieces of wood, trying different
> >>bits, measuring, re-measuring, but mostly just procrastinating
> >>out of fear. Then I drilled the holes in about 15 seconds flat.
> >>
> >>SG
> >>
> >>
> >>
> >>--
> >>------------------------------------------------------------------------
> >>Stephen Gwyn                       | Tel:
> >>1-250-363-3136
> >>Canadian Astronomical Data Centre  | Fax: 1-250-363-0045
> >>Herzberg Institute of Astrophysics | Cell: 1-250-885-6969
> >>5071 West Saanich Road             | E-mail:
> >>Stephen.Gwyn at nrc-cnrc.gc.ca
> >>Victoria, BC, V9E 2E7, Canada      |
> >>http://astrowww.phys.uvic.ca/~gwyn/
> >>------------------------------------------------------------------------
> >>
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> >
> >
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> -- 
> Kris Coward http://unripe.melon.org/
> GPG Fingerprint: 2BF3 957D 310A FEEC 4733  830E 21A4 05C7 1FEB 12B3
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-- 
Kris Coward					http://unripe.melon.org/
GPG Fingerprint: 2BF3 957D 310A FEEC 4733  830E 21A4 05C7 1FEB 12B3

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