Building your own water tank

[BrwBier]

I added text to show fill and sink drain locations. Also as inspired by Mad Jack, I am using a $25pump and faucet, seen if you look carefully at the picture. You can just see the hoses for testing the pump. It will pump down to about the last 1/2 gallon. There is also a drain for the fresh water for the end of trip, and when parked level, drains about 95% of the water. Its the same for both tanks. I had thought about a pressurized system but then you would have to seal the fill valve and I only want to use a pour in type valve. This will be mounted inside of a lower cabinet.

[madjack]

...on our setup we used a marine water deck fill which is mounted on the right hand side(curb/passenger) behind and slightly above the fender...for a sink, we used a SS steam table tray which has no drain...just lift and toss water on nearest bush....
madjack

[Micro469]

Fresh water tank and gray water tank


Each holds about 7 gallons

Are those going to be accessable if something goes worng???

[BrwBier]

Fresh water tank and gray water tank


Each holds about 7 gallons

Are those going to be accessable if something goes worng???

I had thought of that also, but I figured that the plumbing in a house is not accessible and what could go wrong with a water tank. So the short answer is no. The pump area does have an access door. If the worst did happen I have the bottom mapped out so I could cut the floor from underneath and would then have a 4'x4' area to replace.
Brwbier

[BobR]

I found a link to some different ideas on how to construct a tank out of wood and fiberglass. Enjoy.

http://www.butlerprojects.com/articles/tanks/index.htm

[surveytech]

Bob........that was a short stay in Lakeland!

[BobR]

Bob........that was a short stay in Lakeland!

About 4 years...Sha got a great job in Sarasota and it is closer to my area as well. We really liked Lakeland but ya gotta go when it is time.

The more I think about it...many are using fiberglass and epoxy to keep the water out of their TD's why not use it to keep the water in it.

[Niall]

I was lazy and purchased mine from an RV store, 15 Gal with a large inlet , air vent and drain. I wanted the tank removeable ( clean tank = clean water ) so i made a tray for the tank, welded on a few hinges and nuts to bolt the thing up in place. Here's the tray.

Niall.

[Mark & Andrea Jones]

It will pump down to about the last 1/2 gallon. There is also a drain for the fresh water for the end of trip, and when parked level, drains about 95% of the water. Its the same for both tanks. I had thought about a pressurized system but then you would have to seal the fill valve and I only want to use a pour in type valve. This will be mounted inside of a lower cabinet.

You could accomplish 100% drainage with a little slope to the pipe and strategic placement of the fill spout & drain area. Then you wouldn't have to worry about water (or grey water) staying in the "tank" and getting really funky over time. Yech! Not a nice thought. Then, how do you clean it when you can't get to it? A couple of strategic shims could work, unless there is no more vertical height of the space to work with. Retrofitting a few shims could be a problem, though. Of course, if the slope is built into the way that the plastic pipe is glued initially, that would be better. Unless you've already done that, it is a little late in your build for that, though.


Andrea.

[BrwBier]

The 95% is just an estimate. There is some slope built in, but you would have to be perfectly level, not likely at a dump station. For cleaning I use the same products I use to sterilize my brewing equipment, so their is no problem there. Even in commercial RV's you cant open the tank to physically clean them.
Brwbier

[stedi]

hi y'all,
i'm planning on a 4'-4.5' length of 8" pvc for my water tank. i also have a coleman hot water on demand that i'd like to integrate into my water system, but that's a little beside the point of my post. here goes: what fittings do i use on my homemade tank for fill, vent, outlet, & drain? also, do i need to provide a large access hole? like a cleanout? just don't know water tank etiquette-- thanks in advance for your help.
regards,
steve

[stedi]

well if i ain't God's own thread killer!

[Micro469]

well if i ain't God's own thread killer!

Yea, I feel like that at times too..... Sorry I can't help with this one...

[stedi]

thanks for the thought, John.
steve

[Sierrajack]

Well, guess I can throw in my 2 cents worth. I went to www.tjtrailers and bought the 9 gallon tank which measures 8"x16"x18". I also got a kit that they recommend with the 1 1/4" gravity filler, 3/8"MPT draincock and 1 1/4" barb fill fitting. The best thing about this is that you can put the fittings anywhere you want and they even throw in a can of cement. The tank fits perfectly and is very easy to install. Hope this helps.