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Ben
Master Marine Consultant

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USA
1234 Posts
Initially Posted - 12/29/2004 :  07:53:44  Show Profile
Hi all, Happy Holidays!

I checked on my boat the day after Christmas and noticed that the marine antifreeze that I had in my toilet on the boat was gone. I left at least half a bowl full, and I'm assuming it somehow migrated into the holding tank. I pumped a total of three gallons of the pink stuff into the head.

is this normal? do I need to keep pink stuff in the bowl?

Thanks!
Ben
Beneteau 361
Viking Kitty
Columbus, Ohio
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Oscar
Master Marine Consultant

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USA
2030 Posts
Response Posted - 12/29/2004 :  08:15:47  Show Profile  Visit Oscar's Homepage
Is your tank downhill of the bowl? If so, gravity is the culprit. Or, if the weather was warm when you winterized, cooling the tank would have "sucked" the fluid in, or someone used it....... IMO, as long as there is no water that replaced it, nothing can freeze....

Oscar
C42 # 76 "Lady Kay" (Ex. C250 WB #618 )
Georgetown MD/Fort Lauderdale FL
Edited by - Oscar on 12/29/2004 08:19:59
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Ben
Master Marine Consultant

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USA
1234 Posts
Response Posted - 12/30/2004 :  07:17:33  Show Profile
Thanks for the info Oscar! Looks like gravity may be the cause.
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Dave Bristle
Master Marine Consultant

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Djibouti
10005 Posts
Response Posted - 12/30/2004 :  22:29:09  Show Profile
Aren't you supposed to have a vertical loop and an anti-syphon vent to keep that migration from happening--particularly in the opposite direction?
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Oscar
Master Marine Consultant

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USA
2030 Posts
Response Posted - 12/30/2004 :  22:32:47  Show Profile  Visit Oscar's Homepage
Not from the bowl to the tank. Shortest, straightest route possible. Joker valve is supposed to prevent back-flow, especially if the level of the contents of the tank is above the bowl. (I know what happens when they fail , always happens under sail in six foot waves.) However the joker valve only works one way. So if the tank is below the bowl, stuff can gravitate through the valve into the tank. This is actually a good thing.

Oscar
C42 # 76 "Lady Kay" (Ex. C250 WB #618 )
Georgetown MD/Fort Lauderdale FL
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.