SailNet Community - View Single Post - sewage backs up into head when boat heeled
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Old 07-13-2010
donradclife donradclife is offline
Don Radcliffe
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Spend the $10 and replace the joker valve.

The reason you don't need a vented loop from the toilet to the holding tank is that the contents of the holding tank won't sink the boat if they syphon back into the toilet.
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