Fw: Thoughts on holding tank outflow placement
Listees-
Peggy Hall once described a system just like Scott's. This thread is
fortuitous because I'm right at the point of ordering a plastic holding tank
of around 30 gallons.
A couple of questions. What did Scott use for vents on a one inch hose? Does
anyone remember the name of the small fabricator in the NE who had a good
product and competitive rates?
Regards.
Larry
----- Original Message -----
From: "Scott H.E. Welch" scott@firstclass.com
To: trawlers-and-trawlering@lists.samurai.com
Sent: Wednesday, January 25, 2006 8:39 PM
Subject: Re: T&T: Thoughts on holding tank outflow placement
"John Iott - hotflashrefinishing.com" hotflash@com-pair.net writes:
Thanks for all your sharing of knowledge this is a great forum.
One further suggestion, courtesy of the guys at Marine Sanitation in
Seattle
(no relation, just satisfied customers):
When you install your tank, give a lot of thought to the vent lines.
Typically, the vent is a single small (3/4") line running up from the
tank.
This is very bad for two reasons: first, very little ventilation can come
down the line. This leads to lack of oxygen, and the anaerobic environment
leads to big stinks.
"Larry N. Brown" cigano55@hotmail.com writes:
A couple of questions. What did Scott use for vents on a one inch hose?
I just used plain delrin through-hulls. I also used the good white sanitation
hose for my vents.
One small warning, you have to make sure that your vent lines have no low
points, then they become P-traps, which is not what you want. :-( One other
note, you can't use a single vent up to a tee. The whole point is to have the
air flow through the tank, thereby oxygenating the surface of the contents.
This encourages bacterial growth, which is what eats the stinky stuff.
By the way there is also a fancy system which uses an air bubbler (similar to
those in aquariums) to achieve the same effect. My dockmates have this system
and seem to like it.
Scott Welch
FirstClass Product Manager
www.firstclass.com
"The person who makes no mistakes usually doesn't make anything"
Larry,
Look at this Vetus site http://www.vetus.com/frame-cat.htm
STAINLESS STEEL (AISI) BREATHER NIPPLES section.
1" size. Thought about using these but at the time I needed them they were
not available. Vetus is very good quality merchandise but a very difficult
company to deal with on a number of fronts. They do have parts you can't
find elsewhere however and sometimes have to bite your lip.
I ended up using a deck fill adaptor and installed a clam shell over the
top.
Jeff
-----Original Message-----
From: trawlers-and-trawlering-bounces@lists.samurai.com
[mailto:trawlers-and-trawlering-bounces@lists.samurai.com] On Behalf Of
Larry N. Brown
Sent: Thursday, January 26, 2006 8:10 AM
To: Trawlers and Trawlering
Subject: T&T: Fw: Thoughts on holding tank outflow placement
Listees-
Peggy Hall once described a system just like Scott's. This thread is
fortuitous because I'm right at the point of ordering a plastic holding tank
of around 30 gallons.
A couple of questions. What did Scott use for vents on a one inch hose? Does
anyone remember the name of the small fabricator in the NE who had a good
product and competitive rates?
Regards.
Larry
----- Original Message -----
From: "Scott H.E. Welch" scott@firstclass.com
To: trawlers-and-trawlering@lists.samurai.com
Sent: Wednesday, January 25, 2006 8:39 PM
Subject: Re: T&T: Thoughts on holding tank outflow placement
"John Iott - hotflashrefinishing.com" hotflash@com-pair.net writes:
Thanks for all your sharing of knowledge this is a great forum.
One further suggestion, courtesy of the guys at Marine Sanitation in
Seattle
(no relation, just satisfied customers):
When you install your tank, give a lot of thought to the vent lines.
Typically, the vent is a single small (3/4") line running up from the
tank.
This is very bad for two reasons: first, very little ventilation can come
down the line. This leads to lack of oxygen, and the anaerobic environment
leads to big stinks.
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