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From: Larry N. Brown (no email)
Date: Tue Jul 25 2006 - 16:03:10 EDT
I had heard of Ronco and Raritan "custom" tanks so I built a board out of
CPES'd and painted 3/4" plywood to fit in the port side of my lazarette to
contain my Lectrasan unit, the salt water injection tank(my Tecma toilets
are fresh water), a dedicated gp 31 battery and the remaining space was to
mount an approx. 35 gal holding tank. The board had 3/4" x 3" high glued and
screwed on to keep things from sliding around.
When I contacted Ronco and Raritan, I discovered their "custom" tanks were
just made from stock molds. I'd have to adapt my design to their blanks but
Id already constructed my board and I wanted my tank to FIT.
Got hold of Triple M Plastics in Maine, a small firm that builds tanks for
fire trucks, pest control companies and so forth:
http://www.triplemplastics.net/ They estimated they could weld up the tank
to my exact spec. out of 3/8 polypropylene for $220.00. That would include
any number of reinforced, threaded holes for fittings. I wanted no holes in
the bottom of my holding tank so I had one 1 1/2" threaded fill hole on top
and two 1 1/2" drop tubes at $30 apiece additional. Per Peggy Hall's advice
there are 2 x 1" NPT holes in diagonally opposite corners for 1" PEX vent
hoses. According to Peggy, 18" is about the max height for passive
ventilation which is the height of my tank. At the suggestion of the shop
owner, I added a 10" cleanout so if I-ugh- have to, I can reach the bottoms
of the draw tubes for cleanout. That was $20 extra.
So, for about what I'd have to pay for a Ronco or Raritan "custom" tank with
holes in the top, sides and bottoms, I got exactly what I wanted for $300.
UPS was around $80 Main to Louisiana.
Regards.
Larry
Cigano, 47' Prairie Sundeck
Lying Covington, LA
----- Original Message -----
From: "Peggie Hall" <>
To: <>; <>
Sent: Tuesday, July 25, 2006 10:49 AM
Subject: Re: T&T: Holding tanks
> wrote:
>> ...There are over 1100 molds for rectangular
>> polyethylene tanks....
>
> Ronco Plastics http://www.ronco-plastics.com has more than 400 shapes
> and sizes, including over 100 that are NONrectangular. Their tanks are
> top quality, thick walled (at least 3/8", which is 50% thicker than "off
> the shelf" tanks), reasonably priced...and they install
> fittings--including pickup tubes--in the sizes and locations specified
> by the customer when they make the tank.
>
> In the unlikely event Ronco (no relation to the VegoMatic Ronco, btw)
> doesn't have a tank that'll fit, there are at least two companies that
> make good quality welded plastic tanks:
>
> Triple M Plastics: http://www.triplemplastics.net/
>
> SeaFab (formerly CC Tech): http://www.seafabtanks.com/
>
> --
> 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://shop.sailboatowners.com/books/detail-books.htm?fno=0&sku=90&cat=1304
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