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Old 11-15-2019, 08:57 PM   #1
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RV Toilet

My new to me 2015 Lifestyle fifth wheel has a horrible toilet, it is to shallow and has no lip , not man friendly at all, the problem is I cannot find a brand name. Maybe someone out there can help.
My research indicates that a Domectic 320 is a compatible replacement but I cannot be sure. Looking for someone that has been there and done that
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Old 11-15-2019, 10:42 PM   #2
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Thetford
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Old 11-15-2019, 10:55 PM   #3
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Dometic also makes them. The one I have is Dometic and it's a nice oval bowl that is guy friendly. I don't remember the model number, but it's not one of those cheap plastic ones. It's an actual porcelain throne. Cost about $150 to $200. I don't remember exactly.
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Old 11-16-2019, 08:36 AM   #4
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The Dometic brand used to be Sealand and is an excellent toilet. The 320 is a porcelain bowl model much like residential toilets. It readily fits on a standard RV sewage flange in place of any other RV gravity toilet. "Gravity" means the waste water just drops down the pipe - no pump involved.
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Old 11-16-2019, 08:40 AM   #5
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RV roilets are two basic flavors, low or high. By low I mean RV low. By high I mean more residential height. Porcelin is the only way to go.
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Old 11-16-2019, 08:53 AM   #6
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Find the toilet you want and buy it. It will fit and be "compatible". There's only two connections and they are standard: The water inlet and the contents outlet.
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Old 11-16-2019, 01:00 PM   #7
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Quote:
Originally Posted by tfryman View Post
Find the toilet you want and buy it. It will fit and be "compatible". There's only two connections and they are standard: The water inlet and the contents outlet.

Sorta......


Enlongated ones may interfere with doors, cabinets etc


Some may require mod/changes to floor flange


Centerline/offset could be an issue


It would be nice if OP would ID his present toilet.....there IS a sticker but many times to find the sticker requires removal of toilet


Here is a Thetford toilet Conversion Chart.
OP can visually ID toilet and then check for compatible replacement

https://www.thetford.com/wp-content/...t_22x32_OL.pdf
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Old 11-16-2019, 01:56 PM   #8
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A photo of your existing toilet might help.
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Old 11-16-2019, 03:00 PM   #9
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RV toilet

Thanks to all
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Old 11-18-2019, 07:54 PM   #10
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Quote:
Originally Posted by pub1898 View Post
My new to me 2015 Lifestyle fifth wheel has a horrible toilet, it is to shallow and has no lip , not man friendly at all, the problem is I cannot find a brand name. Maybe someone out there can help.
My research indicates that a Domectic 320 is a compatible replacement but I cannot be sure. Looking for someone that has been there and done that
We just had to repair our toilet this morning. On the back next to the floor was a sticker which identified the make, model of our toilet. Look and see if there is such a sticker on your toilet. You may need to use a small mirror for this job.

The reason we had to repair our toilet was the vacuum breaker broke and started to leak. Took a total of 25 minutes to remove, repair and reinstall toilet.
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Old 11-18-2019, 08:05 PM   #11
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I replaced mine with a "High" Thetford Aqua Magic style II. It is comfy, economical, and works well. Agree that a porcelain bowl is the only way to go. My original was a Sealand and I hated it. The floor flange was different but rotated so it worked anyway and I had to buy some pex tools to rework the water line and install a cut off valve. I needed those anyway.
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Old 11-18-2019, 10:08 PM   #12
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I don’t recall the brand I pulled out of our HitchHiker but I replaced it with the Dometic 320 and have been very happy with it for the last two years. The old waterline was on the left and I had to extend the line to go to the opposite side. A shark bite and short piece of pecan took care of that. Extremely easy to install.
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Old 11-19-2019, 12:19 AM   #13
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I replaced an older Thetford toilet with a Dometic 320 last year, I like the Dometic 320 much better, though in some ways it barely fit (it is closer to the back wall than the Thetford was).
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Old 11-20-2019, 06:56 AM   #14
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Dometic has a good buying guide and catalog for toilets: https://www.dometic.com/en-us/us/pro...ion/rv-toilets.

The Dometic is phyically a drop in replacement though you may need to 'fuss' a bit with the water hookup as that is usually not a direct hookup, being on the far side vs the Thetford.

Also, the 320 IIRC may have an elongated bowl which may interfere with something else in the bathroom. Do your homework

We have a Theford Aqua Magic II in our 5er. So far it's been just fine though it was replaced under warranty. If it gives me the slightest hint of a problem, a Dometic 310/320 will go in its place. We had a Dometic (SeaLand) in the last 5er and it was way above the Thetford in sitting as well as build quality
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