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Old 08-11-2009, 12:33 PM   #1
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1972 27' Overlander
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Home-made graywater tank

My trailer does not have a graywater tank and now is an appropriate to install one.

I had been told there was a post detailing the construction of a gray water holding tank using 4" PVC pipe but for the life of me, I cannot find it. Maybe the thread has expired. If anyone has such information, I would greatly appreciate it.

BH
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Old 08-11-2009, 01:04 PM   #2
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Yes you could build one but this may be an easy solution and hold a lot more water.
Holding Tank : Holding Tanks : RV Holding Tanks : Black Water Tank : Waste Holding Tank : RV Tanks : Black Water Tanks : Gray Water Tank : Grey Water Tank

I added a second tank to my daughters trailer.

Just be sure if you mount a flanged edge tank that you drill over sized holes to allow for tank movement and changes in temperature. I have seen tanks crack across the top of the tank in the winter because of contraction.
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Old 08-11-2009, 02:19 PM   #3
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I've seen a couple of those types of set-ups, and IMHO, it looks like a whole heckuvalot of work for a tank that is so small, it ain't worth botherin'.
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Old 08-11-2009, 02:56 PM   #4
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Agreed, I can't imagine it's much, if any, easier to install than a standard tank.

At around $150 for a 30-gallon gray tank that will fit between your frame rails and only hang down a couple of inches, you'll get a lot more capacity, at a very affordable price.

My Dad always told me, "Do it right. Do it once." This is one of those cases in my opinion.

The tanks Howie linked look good, and at reasonable prices. You could also check this site:


RV Holding Tanks - 75 Sizes & Dimensions


The H664 is the one I installed. If you like, you can read about it in my blog linked below.


Good luck!
-Marcus
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Old 08-11-2009, 03:07 PM   #5
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The pipe tank I read about wasn't shown, but I believe it must have looked like heck from the descripition. 6 or 8 six foot sections of pipe put together with elbows, all hanging below the bellypan, waiting for the first rock or lugnut, or speedbump, to destroy it all. Another way to make your own tank was documented in a thread by norcalbambi. It was a plywood or rigid foam box, that was fiberglassed inside and out. Very inexpensive and easy, and you decide the size and shape.

Rich
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Old 08-11-2009, 03:16 PM   #6
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I also thought about building my own tank. In the end I went to ppl and the h664. I have yet to install it but I did a dry fit and it fits right behind the axles.
Aaron
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Old 08-11-2009, 03:42 PM   #7
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Quote:
Originally Posted by aaumpine View Post
I also thought about building my own tank. In the end I went to ppl and the h664. I have yet to install it but I did a dry fit and it fits right behind the axles.
Aaron
good to know, having the exact same trailer.

now: how do you plan to hold it in there?
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Old 08-11-2009, 04:58 PM   #8
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My safari has a large bay just aft of the axle that will accomodate a wider tank. Mine will be coming from Inca, #h517
It fits with about 1/8" to spare in each direction, and has 35 gallons capacity. I guess the newer safari's frames are made differently?

Rich
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Old 08-11-2009, 10:29 PM   #9
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Talking

Chuck,
I got in touch with Marcus for advice about the tank. Check out his blog. I think I'm going to cheat and copy his install. I bought the tank a couple of months ago. I had to split my redo so I could camp in June. Second phase will include all my plumbing, finishing my kitchen, and doing the reno on the bath. Almost forgot, pulling the two gaucho's and replacing with bunks.
Aaron


sorry if i hi-jacked!
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Old 08-12-2009, 05:34 AM   #10
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1972 27' Overlander
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Graywater Tank

Thanks, Howie, Marcus, Aaron and Rich. You've convinced me to opt for a tank rather than try building one out of PVC. I want the tank to be completely between the frame rails with nothing hanging down. Seems like hanging stuff down is an accident waiting to happen. I did a calculation and the pipe tank really won't hold much. I found the install blog but could not find the article; maybe it was archived. Thanks again, all.
BH
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