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Old 03-02-2007, 03:54 AM   #1
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Holding tanks

Has anyone used 55 gallon poly drums for holding tanks. They are cheap and super strong. If they get nasty, just throw them out and get new ones.
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Old 03-04-2007, 09:40 PM   #2
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Why not just use RV holding tanks, cost ya about $45 plus shipping...
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Old 03-04-2007, 11:41 PM   #3
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I use a 55 gallon plastic tank for my freshwater holding tank inside, but if I were to do it a second time I would probably go with RV tanks. They are just so much simpler. However, I had the plastic barrel and the time so it worked out ok.
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Old 03-05-2007, 05:25 AM   #4
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i keep 2 drums of jacuzzi water inside the bus in plastic 55 gal drums.

in my old skoolie i used a pair of 30 gallon plastic drums underneath for wvo. The 30 gallon containers fit under the bus almost perfectly. The 55's are too big to fit nice under my bus.

i find the plastic to be easy to drill and tap for NPT fittings
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Old 03-05-2007, 06:13 PM   #5
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While looking at pictures, I saw this one. It is what I had guessed might happen with a rv holding tank if it got hit or something. My bus came with one holding tank and it seems pretty flimsy. Try hitting a poly drum with a hammer and see what happens. Nothing. The plastic is thicker by at least 2-3 times. I am probably going to use the drums for my bus. I just wanted to know if anyone had a negative experience. The picture was used without permission. I hope thats ok Richard.

http://www.skoolie.net/gallery2/v/Skooli ... 2.JPG.html
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Old 03-05-2007, 09:16 PM   #6
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That thing doesn't look like it was mounted real well. I used a pair of THESE for mine, plus a regular 60 gal fresh tank that came out of a donor 4th wheel...

I'm not sure how things work in your corner of the world, but have this nagging feeling that if I don't use approved parts & pieces on this thing, I may find myself either in trouble with some law type individual, or just being fforced to re-do it all again later....niether thought strikes me as particularly appealing so I'm using as many approved parts & pieces as I can. This thing has to be inspected by DMV before they will convert title to MH....
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Old 03-05-2007, 10:50 PM   #7
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Boy howdy -- not to pick on Richard, but everything takes learning. Here we learned
that one support under that tank was inadequate. WAY inadequate. I'm getting ready
to make four similar installations, and I have stocked up with ten or 15 pieces of
angle steel and two sheets of plywood.
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Old 03-05-2007, 11:44 PM   #8
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I am glad to hear people are learning from my "learning curve" . I rushed putting in the tanks. They have 4 peices of angle iron they are resting on, well actually more like sandwiched in between. I used 16 pieces at 8 per tank. However, I did not put a peice at the end like I should have as it would have interfeared with the massive battery bank inside the bus. I did learn a horrible lesson. I am not going into it, however I will never, NEVER buy used waste tanks (read: delicate and brittle) again.


GoneCamping are you happy with the tanks you bought? I am going to buy some in the next couple of weeks and would like somthing with a bigger holding capacity, fittings already installed including the sensors. Does anyone else have any other vendors they have had good prices and products from?

Spend the money and buy commercial tanks, support them well and you will never have to mess around with them again. Well, at least that's what I'm hoping. Because removing a half full, broken 48 gallon black tank is much worse than you can possibly imagine. BLAHHHHH!!!!

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Old 03-06-2007, 12:53 AM   #9
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In that picture, I don't see any support under the left half of the tank. I do see the support
at the right end now (at the "step" in the tank), but that left side seems doomed to "fall down".

Glad you are not offended that we are picking on you, Richard! Like I said, everything
takes learning. I've made a blunder or two myself over the years!

And you are right about used plastic. The black ABS isn't so bad, but that white plastic must
be considered "consumable". Ever leave a milk jug out in the weather for a while?

I'm buying my tanks from a local RV dealer. They belong to some RV dealer organization
that has a huge catalog and prints a batch with each store's name on the cover. Anything in
that catalog can be ordered and arrives in a few days. In addition, they have some other
catalogs behind the counter. So you can get darn near any kind of tank to fit the available
space, even if they don't have it in stock.
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Old 03-06-2007, 12:54 AM   #10
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One thing about using the drums...if you use the standard openings on them, one was pipe thread and the other was some goofy thread on mine. Also, the 3/4 inch NPT knockout in the cap was USELESS. Those threads will not seal. Plan on either making the tank removable or putting fittings somewhere other than the NPT fitting at the top. Otherwise you will end up with stagnant water in the bottom. My tank is under my bed and VERY easily removed by design so I can flush it after every trip. Make sure you get food grade barrels. I honestly don't know if mine are or not. I've never looked for an NSF logo on them. When I first installed them they added a distinct plastic taste to the water. It may well have been my plumbing as well. A flush of bleach and freshwater tank treatment pretty much cured that though.
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