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06-14-2018, 09:07 AM
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#1
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Established Member
Join Date: Sep 2016
Location: Cookeville
Posts: 41
M.O.C. #19041
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Which toilet
This is not a "what caused it" or a "how do I fix this" question. I am in my summer place in a rural state park in Montana. The water pressure fluctuates. Water pressure fell below 40 psi and my bathroom flooded. I called Thetford and they said yes, that is what happens when water pressure drops below 40 psi. After you experienced water pressure below 35 or 40psi and the Thetford overflowed in your bathroom what toilet did you replace your otherwise fine and new Thetford with?
Thanks,
Steve
__________________
2010 Montana Mountaineer 295RDK
2007 Ford F-250 Tires, outside exhaust, and other things."We all are eternal spirits; and at the end of what we now see and experience, eternity begins, which is reality." SD Shaffer
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06-14-2018, 09:17 AM
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#2
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Montana Master
Join Date: Nov 2015
Location: Arlington
Posts: 1,523
M.O.C. #18081
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Dometic 320 for us. The 310 and 320 appear to be the defacto recommendations on the forum.
__________________
SOB
2015 Volvo VNL780 D13, iShift, 32k ET air hitch, Idle Free LiFePO4 APU
16.8KWhr LiFePO4, 2.52 kw solar, 10kva Victron split phase
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06-14-2018, 09:37 AM
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#3
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,696
M.O.C. #4831
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Unfortunately the Thetford will overflow the bowl with low or fluctuating water pressure. Of course it will also flood if the pressure is steady, high, varying or the shade of the moon.
My preference for a replacement is the 320. It is better sized for adults, particularly males.
__________________
Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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06-14-2018, 10:30 AM
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#4
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Montana Master
Join Date: Sep 2014
Location: Full Timer In Naples, Florida
Posts: 1,049
M.O.C. #15731
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Been there, done that, Replaced with 320. you need 11" from the center of the flange to the wall min for 320. enough said, Mike drop. Lol
__________________
2017, 3500 Ram Big Horn, 4x4, Crew Cab, DRW, Aisin Transmission, 4:10. Curt Q20, 2014 Mountaineer 331 RLT, Sailun's on the rv and truck.
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06-14-2018, 12:43 PM
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#5
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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Replaced the one in the old rig with a Dometic 310 (all that would fit) after getting a total replacement from Tetford and still having all the problems with the new one. Haven't replaced the one in the new rig yet, but it's on the list.
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06-14-2018, 02:38 PM
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#6
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Established Member
Join Date: Sep 2016
Location: Cookeville
Posts: 41
M.O.C. #19041
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Ok, a consensus, good. I will buy the Dometic.
Thanks to all, Steve
__________________
2010 Montana Mountaineer 295RDK
2007 Ford F-250 Tires, outside exhaust, and other things."We all are eternal spirits; and at the end of what we now see and experience, eternity begins, which is reality." SD Shaffer
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06-14-2018, 03:09 PM
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#7
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Montana Fan
Join Date: Jun 2015
Location: Beloit
Posts: 283
M.O.C. #17535
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One last suggestion - check both the 310 and 320. We liked the 320 as I believe it is slightly taller than the 310, but I may be incorrect on that. Dometic is clearly the better unit.
__________________
Steve & Lisa
2015 Montana High Country 353 RL | Sailuns | Kodiak Disc brakes
2015 F-350 DRW Crew Cab | Reese Goosebox
Retired and Lovin’ it!
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