[Public-List] Vent Fittings for Holding Tank Installation

[George Dinwiddie]

mahseer at kos.net wrote:
> 
> 
> Am I different or is this normal.  On year 1969 380 my wast tank vent exit
> through the deck at the mast base and is vented into the mast this results
> in no odor at all.

John, that's an unusual installation, but I've heard of such a thing 
before.  Only in the case I heard about, one day the head quit pumping 
properly.  It turned out the vent was clogged, and the crap had filled 
the mast up to the spreaders.  Beware!

Of course, a more serious problem is the lack of airflow.  If you've 
only got one vent, you don't have any airflow anyway.  But if you want 
an odorless aerobic tank, then you want a good airflow through the tank 
to replace CO2 with O2.  Having a vent on each side of the bow will 
ensure a pressure differential and at least some airflow.  In my 
experience, it seems to be enough.

  - George

-- 
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   When I remember bygone days                         George Dinwiddie
   I think how evening follows morn;            gdinwiddie at alberg30.org
   So many I loved were not yet dead,           http://www.Alberg30.org
   So many I love were not yet born.
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