[C38] head on a box

[Max Soto]

LOL! Totally right, It sounds and looks awful, but works. I can always
leave the head in the flush position, even while sailing, and no problem!
Max

2011/11/1 Don Strong <drstrong at ucdavis.edu>

>  Max: Gosh if the boat heals while sailing, the box has to be taller. The
> PO could have placed the head on a 4 foot box just under the hatch, where
> the user of the head could watch the sailing action!  Seat belts might be
> necessary.
> D
>
> On 11/1/11 7:44 AM, Max Soto wrote:
>
> Steve,  Since the loop+vent breaks the siphon, the "pressure" on the joker
> valve is from the grey water located between the head and the loop.
> Don, same thing happened to the PO, so he made a box that raises the head
> about 7 inches, and added a vented loop to the intake hose.  Apparently he
> found he boat with 1' of water. I think that the vented loop for the intake
>  is enough, so I'm going to remove the riser box. Short people have their
> feet on the air while seating in the head!
>
>  Regards,
>
>  Max
>
> 2011/11/1 Don Strong <drstrong at ucdavis.edu>
>
>>  Steve: I did the vented loop head-to sea retrofit because my insurer
>> demanded it.  Big job! The exit hose goes up the along the hull, through
>> the sink top and reaches an apex are just under the deck. The vent is at
>> the apex. The loop+vent breaks the siphon. I don't see how the grey water
>> problem is any different between "overboard" and "waste tank." When the
>> valve is thrown to tank, grey water sits behind the joker valve just as it
>> does when the valve is thrown to overboard.
>>
>> I also installed a vented loop for the sea water intake for the head
>> after we awoke with 6" of water in the boat (someone "moi?" was too sleepy
>> to flip the switch to "dry bowl during the night).  There is also a vented
>> loop on the sea water intake for engine cooling. I recently replaced the
>> vent.
>> Don
>>
>>
>> On 10/31/11 11:43 PM, Steve Smolinske wrote:
>>
>>  Question for anyone with a vented loop in their head discharge.
>> Looking at it on paper it seems that the pressure of the grey water in the
>> section from the head to the vented loop would be enough to leak back into
>> the toilet bowl.  I know there is a duckbill valve and a flapper valve in
>> the head to stop the reverse flow, but as we all know if you leave the
>> discharge seacock open the head will fill up.   Does the vented loop work
>> because the head pressure of the grey water in the run from head to loop is
>> not as great as that coming from the seacock?  Any experiences are greatly
>> appreciated.   Thanks
>>
>> Steve
>>
>>
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>>
>> --
>> Donald R. Strong
>> Professor
>> Dept. of Evolution and Ecology
>> University of California, Davis 95616
>>
>>
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>>
>>
>
>
>  --
> Max Soto
> C38 #198 ESTANCIA
> Puntarenas, Costa Rica
>
>
> _______________________________________________
> Listserve mailing listListserve at catalina38.orghttp://catalina38.org/mailman/listinfo/listserve_catalina38.org
>
>
> --
> Donald R. Strong
> Professor
> Dept. of Evolution and Ecology
> University of California, Davis 95616
>
>
> _______________________________________________
> Listserve mailing list
> Listserve at catalina38.org
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>
>


-- 
Max Soto
C38 #198 ESTANCIA
Puntarenas, Costa Rica
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