Rick, you are absolutely correct! Blocking the air hole was a temporary
measure only used while pumping. It is a big pain, but better than no water
or a flooded boat. Guess I have a new job to add to my list...

> Er, not to put too fine a point on it, with the vent blocked, you have no
> certain protection from a siphon forming between the water inlet at the
> toilet, save for shutting off the inlet seacock. If the pump and bowl are
> above the waterline, you're OK but otherwise... not good. As I found out over
> the weekend (no flooded boat but it was close...).
>
> Cheers,
> Rick
>>
>> To get the pump to draw water we need to block the air hole on the vented
>> loop.
 

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Received on Wed May 30 08:38:19 2007