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Old 10-14-2016, 04:36 AM   #1
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Toilet tank removal...

After numerous fix and refix we are planning on straight piping sewer ( bypass the black tank.) and take black ( bladder type ) tank for waste off and out Pipe to toilet and out should be easy just don't know what we are getting into as how the toilet is connected to tank under trailer ... Anyone know of a diagram of sorts to see about toilet to tank hook up ??
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Old 10-14-2016, 01:06 PM   #2
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That sounds like a drastic measure

I guess you are sure you want to lose the use of the toilet when not connected?!?
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Old 10-14-2016, 02:19 PM   #3
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I would agree that this step would be drastic and would significantly devalue the unit if you were to sell it. What problems are you having to take this step?
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Old 10-14-2016, 03:24 PM   #4
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We would always have use of toilet connect pvc pipes as in park models we never park without sewer hookup.
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Old 10-14-2016, 03:56 PM   #5
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Turning the Redwood into a park model does not seem like a good idea.

How about installing electric valves with the controls inside to make it more convenient. I am assuming the main reason to remove the black tank is to eliminate the hassle of dumping and flushing.

For the technically inclined, you could even automate the system with a cheap PLC.
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Old 10-14-2016, 05:10 PM   #6
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If you do this, no way would I, you will most likely need to install a residential toilet in order to have enough water to move everything down the line & in my model that wouldn't fit. Your toilet is not plumbed directly onto the tank, but has about a 3' angled section from toilet to tank. IMHO, you are attempting a very drastic & possibly expensive (installation & loss of value on your RW) to save 10 minutes a week of unpleasantness, that's as long as it takes me to drain & flush my black once a week & you will no longer be able to use your toilet while traveling, truck stop potties here we come.
But FYI, there are 2 bolts holding the toilet to the floor, the piping flange is also screwed to the floor with a foam gasket between, then piping either has a couple 45 degree bends or maybe straight down & is supposed to be glued to the tank & also has another 2" pipe on the opposite end of the tank which extends through the roof that will have to be plumbed back to the new drain line some how the be used as a vent.
Good luck with this project & be sure to post a lot of pictures as the project progresses!!
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Old 10-14-2016, 10:02 PM   #7
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You state you have had to fix and re-fix, what exactly is the trouble that is driving you to bypass the tank?
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Old 10-14-2016, 10:25 PM   #8
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Quote:
Originally Posted by Steve & Kim View Post
After numerous fix and refix we are planning on straight piping sewer ( bypass the black tank.) and take black ( bladder type ) tank for waste off and out Pipe to toilet and out should be easy just don't know what we are getting into as how the toilet is connected to tank under trailer ... Anyone know of a diagram of sorts to see about toilet to tank hook up ??
My question is: who is doing the fixing and re-fixing. Most RV dealers/service centers have some really incompetent staff that either don't know what they are doing, or the really don't care how they fix it because you will be down the road, and they got your money. If you return to the forum and help us with some information we may have some ideas to help you sort out problems. Sometimes if you are having plumbing issues then call a real plumber and have them take a look at it. They do this everyday. (Pipes are pipes) if the tank is breaking away from its mounts take it to a welder he knows what to do with a piece of steel. In most cases they will see all the weak links in the manufacturing and bring resolve to the issues. I have zero confidence in dealers. Most of then hire one main knowledge person and an army of idiots for minimum wage to carry out the work.
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Old 10-14-2016, 10:39 PM   #9
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Also if it's the crappy ( pardon the pun) Thetford toilet then replace it with a Dometic 310 or 320, that requires a lot less work/expense than your suggesting.
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Old 10-16-2016, 04:57 PM   #10
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Quote:
Originally Posted by Steve & Kim View Post
After numerous fix and refix we are planning on straight piping sewer ( bypass the black tank.) and take black ( bladder type ) tank for waste off and out Pipe to toilet and out should be easy just don't know what we are getting into as how the toilet is connected to tank under trailer ... Anyone know of a diagram of sorts to see about toilet to tank hook up ??

I had a 1955 Silver Streak TT that was set up like that from the factory but we never used that design.

As others have said, there's more than one manufacture of the RV toilets and some are better than others.
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