[Public-List] Head questions ...

[Roger L. Kingsland]

I wonder if the vent at the top of the hose from head to tank could be run
thru the side of the cabin and connected to one of those 90 degree fittings
that are used to vent tanks.  That way the poop hose would be vented but to
the outside.

-----Original Message-----
From: public-list-bounces at lists.alberg30.org
[mailto:public-list-bounces at lists.alberg30.org] On Behalf Of Meinhold,
Michael J.
Sent: Thursday, March 10, 2011 8:40 AM
To: Alberg 30 Public List -- open to all
Subject: Re: [Public-List] Head questions ...

Jonathan 
 I put a vented loop between the head and the tank.  Rachel has a
picture of it somewhere in the stuff she posted on Picassa.
I will look for measurements when I get home tonight.  It has a check
valve and I have not found it releases any odor.
I know the risk is low since it enters the tank at  the top, but I feel
more comfortable that I can avoid a siphon when the tank is nearly full.

My boat is there Jonathan - climb aboard and look and measure if you
want - bit of a mess down below though!

Mike
Rinn Duin #272
-----Original Message-----
From: public-list-bounces at lists.alberg30.org
[mailto:public-list-bounces at lists.alberg30.org] On Behalf Of Gordon Laco
Sent: Thursday, March 10, 2011 8:16 AM
To: Alberg 30 Public List -- open to all
Subject: Re: [Public-List] Head questions ...

Good morning Jonathan,

Here's some input.... I'll put my comments below your questions.


On 10/03/11 7:47 AM, "Jonathan Adams" <laughing_gull at verizon.net> wrote:

> Some quick questions on installing heads.
> 
> 1. Is there any reason to put the vented loop on the intake? I have
never had
> this before, but I have seen it on a few installations
A vented loop here will inhibit the possibility of the intake siphoning
water into the head's bowl through the valves of the flushing pump.
Boats
have been flooded and sunk by this sort of thing.  The pump's valves are
not
intended to be proof against back flooding so the vented loop is
protection
against the time somebody forgets to close the sea cock after the head
has
been used.
> 
> 2. I plan on having the vented loop between the head and the holding
tank.
> Have 
> people had problems with waste siphoning from the tank back into the
head.
> When 
> the head was connected to the through hull, this made more sense.
I think a vented loop between the head and the holding tank might make
bad
odours a near certainty.  Much better to position the two so that sewage
coming back into the head is not an issue.
> 
> 3. Does anyone have the rough  measurements handy from the head to the
tank in
> the standard port bunk position, and from the tank back to the exit by
the
> shrouds (middle of the head closet)? I will be down at the boat this
weekend,
> but ... was hopping to get things ordered before then.
I've got no direct experience with that; SURPRISE is an apres 400 boat
so I
use the built-in tank beneath the main cabin sole.
> 
> Any help appreciated.
> 
> Jonathan
> 197
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