RV.Net Open Roads Forum: Tech Issues: Black Water Tank Leak

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 > Black Water Tank Leak

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dougrainer

Carrolton, Texas

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Joined: 06/11/2007

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Posted: 08/03/22 11:44am Link  |  Quote  |  Print  |  Notify Moderator

"polyethylene resin
These blackwater tanks are made from rotationally-molded polyethylene resin that provides strength, long service life, and great protection against cracks, rust, and corrosion. Blackwater holding tanks are manufactured by Dura-Cast and Ronco. RV septic tanks can be used for most recreational vehicles makes and models."

ABS tanks have kind of gone away years ago. Most tanks are this material above and COLOR has no bearing on what material they are made of. A good tell if you suspect ABS is to look at the 3 inch exit fitting of the tank. ABS tanks will show/have ABS cement where the pipe goes in. IF you have a Hose Clamp, it is not ABS. Doug

jjrbus

FT Myers FL

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Posted: 08/11/22 04:17am Link  |  Quote  |  Print  |  Notify Moderator

Bayley wrote:

I'm a little confused on the type of plastic the tank is made of.
I contacted the manufacturer of my trailer and they said it was LLDPE. In my research it says LLDPE is white or yellowish in color. My tank is black in color. My guess is it is ABS....does that sound correct?


Yes confusing, need to be careful. Elkhart plastics Inc is a large manufacturer of RV holding tanks and their black tanks are black but made from polyethylene. Could only guess they add the color as they are not using virgin material??

https://www.recpro.com/8-gallon-rv-holding-tank/

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