I had to get VERY creative to solve my pump out hose problems. My holding tank follows the chine of the hull so a straight piece of hard pipe perpendicular to the top of the tank was only going to go in about a foot before stopping on the outboard side of the tank. The tank fitting wasn't a "thru-hull" with threads on both sides so whatever threaded in the top also had to extend through to the bottom. The sanitation hose was so stiff that getting it off was impossible without removing the deck fitting.
In the end I replaced almost everything and ended up with a continuous sequence of parts that was fully assembled prior to installation. Deck fitting -> 2" sanitation hose (exactly the right length to reach the tank ~2.5ft long) -> pvc nipple -> pvc threaded adapter that threaded into the top of the tank -> pvc sink drain tail that fit very tight inside threaded section and extended ~12" out the threaded adapter -> another piece of flex sanitation hose that would reach the bottom of the tank. I had to use a clamptite (wire tie) on all of my hose connections so that they would fit through the holes in the deck and tank. Installation was a dance between someone on the deck and someone screwing the threaded fitting into the tank. Oh yeah, don't forget this was the only opportunity we had to use 4200 under the deck fitting. We also found some core rot when we removed the deck fitting. If you find the same thing I have some pretty good solutions you might like. Let me know. I don't think you'll be able to use solid pipe between the tank and deck. I don't know what advantage it would be to use solid pipe inside the tank. How would you seal the pipe as it goes through the tank? Best solution for smelly tanks is to keep them empty. Good luck, Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Dec 4, 2014 9:44 AM, "Joel Aronson via CnC-List" <cnc-list@cnc-list.com> wrote: > All, > > My nasty winter project is to replace the hose from the holding tank to > the deck fitting. Does it make sense to use a piece of PVC pipe from the > bottom of the tank to a point above the tank so that the hose stays dry? > > -- > Joel > 301 541 8551 > > _______________________________________________ > This List is provided by the C&C Photo Album > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go bottom of > page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > >
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