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TWL: Holding Tanks, Constructing

M
MARJANZ@aol.com
Wed, Feb 18, 2004 6:59 PM

I am replacing a fiberglass holding tank and constructing a larger fiberglass
tank.  There were no pre-made tanks that fit the space What material would be
better Epoxy or boat resin?
The old tank had outlets at the bottom end. The new tank will have top
outlets. Where can I find the fittings to attach the top tank fitting to  dip tubes
that will go to the bottom of the tank?

Mark and Janzel
Acquired Taste
Heritage 38
Dana Point, CA

I am replacing a fiberglass holding tank and constructing a larger fiberglass tank. There were no pre-made tanks that fit the space What material would be better Epoxy or boat resin? The old tank had outlets at the bottom end. The new tank will have top outlets. Where can I find the fittings to attach the top tank fitting to dip tubes that will go to the bottom of the tank? Mark and Janzel Acquired Taste Heritage 38 Dana Point, CA
PH
Peggie Hall
Wed, Feb 18, 2004 8:00 PM

There were no pre-made tanks that fit the space

Have you checked Ronco Plastics? They make top quality tanks and have
more than 400 shapes and sizes to choose from, including over 100 that
are non-rectangular. It would be hard NOT to find one among that many
that won't fit. Their catalog is at http://www.ronco-plastics.com With
only a few exceptions, drawings can be oriented any direction...'cuz
there is no top or bottom till the fittings go in, and you get to spec
the sizes and locations...including all on the top,  with tubes to the
bottom. Btw, they're just down the road from you in Tustin.

In the unlikely event none of theirs really will fit, C.C. Tech builds
custom welded plastic tanks to any drawing. They're at
http://www.gocctech.com/marine/boat-tank.htm

The new tank will have top
outlets. Where can I find the fittings to attach the top tank fitting to  dip tubes
that will go to the bottom of the tank?

If you insist on building a fiberglass tank, you make them. The tube
doesn't go on the female fitting in the tank, but on the male
thread-barb fitting, inserted like meat thermometer. Take one to your
local hardware store...find a piece of PVC pipe that has an OD that's a
tight fit for ID of the thread/barb fitting (depending on wall
thickness, that should be 1").  Cement it inside the fitting with PVC
cement. The other end of the pipe should reach to within 1/4" of the
tank bottom when the fitting is threaded all the way in, and should be
cut at about a 25 degree angle..if it's flat across, waste and TP will
clog it. Voila..a tank fitting with a pickup tube inside.

--
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://www.seaworthy.com/html/get_rid_of_boat_odors.html

MARJANZ@aol.com wrote: > There were no pre-made tanks that fit the space Have you checked Ronco Plastics? They make top quality tanks and have more than 400 shapes and sizes to choose from, including over 100 that are non-rectangular. It would be hard NOT to find one among that many that won't fit. Their catalog is at http://www.ronco-plastics.com With only a few exceptions, drawings can be oriented any direction...'cuz there is no top or bottom till the fittings go in, and you get to spec the sizes and locations...including all on the top, with tubes to the bottom. Btw, they're just down the road from you in Tustin. In the unlikely event none of theirs really will fit, C.C. Tech builds custom welded plastic tanks to any drawing. They're at http://www.gocctech.com/marine/boat-tank.htm > The new tank will have top > outlets. Where can I find the fittings to attach the top tank fitting to dip tubes > that will go to the bottom of the tank? If you insist on building a fiberglass tank, you make them. The tube doesn't go on the female fitting in the tank, but on the male thread-barb fitting, inserted like meat thermometer. Take one to your local hardware store...find a piece of PVC pipe that has an OD that's a tight fit for ID of the thread/barb fitting (depending on wall thickness, that should be 1"). Cement it inside the fitting with PVC cement. The other end of the pipe should reach to within 1/4" of the tank bottom when the fitting is threaded all the way in, and should be cut at about a 25 degree angle..if it's flat across, waste and TP will clog it. Voila..a tank fitting with a pickup tube inside. -- 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://www.seaworthy.com/html/get_rid_of_boat_odors.html