Not sure how grease etc is going to leap out of the galley sink into
the vent. Our tanks are vented into the head sinks via a spout in
each. Easy to see when the tanks are full when filling, no problem
with contamination from salt water or anything else. Works great!

Doug
s/v Callista

"Peggie Hall" wrote in message
...
My water tank vent empties into the galley sink. My old boat vent
emptied
into the shower stall. I like this arrangement because it does not let
in
salt water and we can just watch the sink for an indication as to when
the
tank is full.

Neither of those locations is the best place for a water tank vent.
They're both full of bacteria and can also become clogged--in a sump by
soap scum, hair etc...in the galley sink by grease, food particles etc.
Plus, if the sump pump fails or the galley drain gets plugged, shower or
galley water can back up into the vent and even the tank.

Out a through-hull is the best place for a water tank vent...into the
bilge a VERY poor second. At least both of those locations allow you to
flush out the vent by overflowing the tank out it each time you fill it.

--
Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://69.20.93.241/store/customer/p...40&cat=&page=1