Oh, swell!  Now you have opened the flood gates of really bad jokes!
Gary

On Thu, Sep 13, 2012 at 4:35 PM, Joel Aronson <[email protected]>wrote:

> Makes sense, but I am truly disappointed that we have only had one toilet
> joke in this entire thread!
>
> Joel
> Sent from my iPad
>
> On Sep 13, 2012, at 4:13 PM, Gary Russell <[email protected]> wrote:
>
> There is another possibility to consider.  In the case of my boat there
> were times when the level of the effluent in the tank was above the bowl in
> the tank.  In my case the tank is transverse in the boat (head on the port
> side) and when on starboard tack the fitting on the port side of the tank
> is submerged and the effluent pressure goes back to the joker valve.  The
> joker valves are never perfect and they will leak some.  What I did is run
> a pipe through the tank from the head fitting in the tank to the opposite
> side of the tank, so the fitting is on the port side but the pickup is on
> the starboard side.  Then when on starboard tack the effluent sloshes to
> port and the pickup is out of the effluent.  When on port tack, the pickup
> is submerged, but is below the level of the head so it doesn't matter.
>  That solved the problem for me.  Does that description make any sense to
> anybody?
>
> Gary
>  S/V Expresso
> '75 C&C 35 Mk II
>
> On Thu, Sep 13, 2012 at 11:25 AM, Wally Bryant <[email protected]> wrote:
>
>> Yup, it's not just salt, but an extraordinary amount of excess minerals
>> are excreted through the kidneys (think about kidney stones,) and can build
>> up in the hoses and the tank as well.  For the last couple of years I have
>> done an annual job of flushing a bunch of fresh water through the system,
>> and then pouring about four gallons of cheap white vinegar down the head.
>>  I make sure some is in the bowl, and that the hoses are full of it.  I let
>> it sit for a day or two, then flush the whole system with fresh water.
>>  After that job I need to disassemble the pump and lubricate the O-rings
>> with silicone grease.
>>
>> This particular problem sounds like a bad joker valve, though.
>>
>> Wal
>>
>>
>> you wrote:
>>
>>> Salt from urine crystallizes on your joker valve
>>> and the joker valve leaks back. Ideally we are supposed to flush clean
>>> water thru but it never happens on the Great Lakes when you are trying
>>> to conserve holding tank space.
>>>
>>
>>
>> --
>> s/v Stella Blue
>> www.wbryant.com
>>
>>
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>
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