Best Toilet for Large BMs

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Reach4

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I have not seen a Caroma toilet. But I know that you can't expect them all accept standard seats. I would think that most people like elongated toilets, and round is usually not elongated.
 

Terry

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Most drains are 3"
When I have installed a Caroma with the 4" trap, 95% I'm dropping into a 3" drain.
I have sold many of the Caroma bowls with the 3" trapway and the results have been good. Just pick one you can afford, and it will be good.
A 3" trapway is 2.5 times the area of a 2" trapway.
 

Mart

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In terms of engineering, if the 3” trap is so much more efficient for large deposits, why isn’t it the typical industry standard? What’s the trade-off that drives Toto and most other to usually design with 2 1/8” (or so) traps, when so many people care about flushing power and probably never consider waste diameters and lengths?

For that matter, why doesn’t MaP/s testing protocol (link below) score toilets on deposits longer than 4” and wider than 1”? I take it from your earlier comments in this thread, Terry, that even a 1000 g MaP rating is essentially not material in assessing whether any toilet without a 3” trap will clog if it has to cope with a much larger-than-average, but not probably uncommon-size crap? Also hard to understand for average toilet-shopping consumers like me who likely otherwise assume that a 2” trap would usually accommodate a 2” diameter turd.

https://www.map-testing.com/assets/...l Version 7-Final-effective April 1, 2018.pdf
3.2.1 MaP test media is comprised of either of the following:
3.2.1.1 Cased Media: One or more 50 ± 4g test specimens (“test specimen”) consisting of soybean paste contained in latex casing, tied at each end forming a ‘sausage’, and meeting the requirements of Section 5.2, and four loosely crumpled balls of toilet paper (“paper”), OR
3.2.1.2 Uncased (Raw) Media: One or more 50 ± 4g test specimen (“test specimen”) consisting of extruded soybean paste meeting the requirements of Section 5.1 and four loosely crumpled balls of toilet paper (“paper”).
3.2.2 Each test specimen shall be 100 ± 13mm in length and 25 ± 6mm in diameter.
 

Terry

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The Washdown toilets used in places like Europe and Australia are not at all like the North American toilets, dependent more on a siphon function and a better bowl rinse. The average stool is 3/4" x 4" which easily fits down a 2" trapway. Older toilets from the early 90's had 1-1/2" trapways and 2" was considered an upgrade. Map scores were hovering between 150 and 400 grams.
It's a rare situation that someone has very large stools, normally caused by a medical condition. Of the thousands of toilets I sell, most have what I call a standard 2" trapway. TOTO, Kohler, American Standard, Gerber to name a few brands. When someone asks the embarrassing question,
"What works for large stools?"
For that, basically for the 1% of the population, it's either a pressure assist, the Kohler Highline with the Flushmate is one, or any of the Caroma bowls. Should all toilets be made for the 1% and should we all learn to brush down the bowls after use like they do in other countries? If that's what you like sure. But as a 99%er, I prefer something that stays a bit cleaner without whoosh of the pressure assist and the splashy washdown of the Caroma. That being said, when I travel, that's when I'm most likely to wind up using a Caroma or a pressure assist.
 

Mart

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Actually, with my 4 old circa 2000 3 GPF A.S. toilets, we’ve been exceptionally lucky, I guess, as we’ve never once had any of them clog. And though we’d be average “emitters” in the 99% club, I’m sure I’ve had more than a few extra-large stools over the decades. Anyway, I take your point — the trade-off is between cleaner bowls in the absence of pressure and/or extra water assistance and added capacity for those who constitute the 1%. But honestly, off-topic though it might be, it would be better all-round if the MaP protocol also tested for size and cleanliness differentials, don’t you think? Time for them to modernize, too, perhaps.
 

jadnashua

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Some medical conditions cause really slow waste movement through the bowel. This allows it to absorb lots of the moisture, making the thing particularly hard and stiff, and often, long as more and more gets added to the end before it decides it has to come out. Small and stiff, no problem for most. Long and stiff, it's like trying to move a log around a curve...sometimes, it's just too long.

Sometimes, the solution is lots of fiber and staying well hydrated, but some medicines can inhibit bowel contractions that move things along, and thus, the problem.
 

Dezlboy

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INTRO: I'm going with the self-purchase and self-install of Caroma Caroma Stanley Smart II. Plumber was over for non-related issue, and saw Caroma in boxes. He tried to talk me into Gerber Viper 1.6 or American Standard Edgemere 1.28. But their 2'" traps ruled them out.

Plumber touted their 3" flush valve and he modifies the tank to hold more water for a "better" flush. Also said low flush toilets are geared for PVC pipes, while mine are circa 1938 cast iron with likely corrosion and thus not a smooth surface. He never heard of Caroma - and I believe more interested in what happens AFTER the BM is past the toilet into the waste pipes.

QUESTION: The opening at bottom of bowl (inside the bowl, not where wax ring goes) appears to be the same size as my current toilet. Measurement was by shoving my fist into each opening (I know, I know). Do you ever "see" the BM not make it into that opening? Sometimes mine are so large they get stuck in the bowl. I guess that's just an issue that the Caroma can't solve.
 
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Terry

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INTRO: I'm going with the self-purchase and self-install of Caroma Caroma Stanley Smart II. Plumber was over for non-related issue, and saw Caroma in boxes. He tried to talk me into Gerber Viper 1.6 or American Standard Edgemere 1.28. But their 2'" traps ruled them out.

Plumber touted their 3" flush valve and he modifies the tank to hold more water for a "better" flush. Also said low flush toilets are geared for PVC pipes, while mine are circa 1938 cast iron with likely corrosion and thus not a smooth surface. He never heard of Caroma - and I believe more interested in what happens AFTER the BM is past the toilet into the waste pipes.

QUESTION: The opening at bottom of bowl (inside the bowl, not where wax ring goes) appears to be the same size as my current toilet. Measurement was by shoving my fist into each opening (I know, I know). Do you ever "see" the BM not make it into that opening? Sometimes mine are so large they get stuck in the bowl. I guess that's just an issue that the Caroma can't solve.
If you're plugging up normal bowls with your BM's, then installing product limited to a 2" trapway isn't solving the problem, is it?
I've sold a few hundred of the Caroma bowls, mainly to those with your issue.
MaP test works with 3/4" x 4" stools. If you need to flush something like a 2" stool, then the Carama is what you should be looking at.
If you're worried about water in the tank, the Carama has buttons at the top, hold one down until the entire tank drains. That's more like 3 gallons.
 

Dezlboy

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If you're plugging up normal bowls with your BM's, then installing product limited to a 2" trapway isn't solving the problem, is it?
I've sold a few hundred of the Caroma bowls, mainly to those with your issue.
MaP test works with 3/4" x 4" stools. If you need to flush something like a 2" stool, then the Carama is what you should be looking at.
If you're worried about water in the tank, the Carama has buttons at the top, hold one down until the entire tank drains. That's more like 3 gallons.
Terry, thanks for the reply, especially as you were kind enough to repeat yourself (again) for me. I tried to steer my plumber to think about the clog in the toilet, not the issue of "movement" through the drain pipe. He touted a toilet that he uses at home, but refused to let me try that product out at his house.
 

Terry

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Terry, thanks for the reply, especially as you were kind enough to repeat yourself (again) for me. I tried to steer my plumber to think about the clog in the toilet, not the issue of "movement" through the drain pipe. He touted a toilet that he uses at home, but refused to let me try that product out at his house.
You've got this.
I almost was wondering if he was going to offer clear toilets on a weekly basis for you to back up his belief that all toilets handled large BM's the same. :)
 
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