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05-17-2018, 07:46 PM
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#1
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Montana Fan
Join Date: Jun 2016
Location: Reno
Posts: 140
M.O.C. #18681
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Help with New Toilet Installation
We bought a new Dometic 320 toilet and my hubby is going to install it tomorrow. The water supply line is too tall to connect to the new toilet so he has to use a stainless flexible water line attached to the existing pex line and toilet. The problem is the 1/2" stainless fitting keeps cross threading on the toilet's 1/2 male fitting (factory installed fitting).
Suggestions? I sure hope so! I want my new toilet! LOL
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Marsha& Kirk
2016 3160RL, 2002 Ford F350 Turbo Diesel
Rudy & Roxy, mini dachshunds
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05-17-2018, 08:26 PM
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#2
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Seasoned Camper
Join Date: Mar 2018
Location: Stark City
Posts: 89
M.O.C. #21339
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If he’s has cross threaded it multiple times, it’s likely he has damaged the threads on the male fitting and will have to replace it as well.
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Indian Springs Farm
2018 3121RL Samsung Residential Fridge
2018 Ford F250 PSD Air Lift 5000
Sailun 637 tires Predator 3500 (2) paralleled
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05-18-2018, 03:24 AM
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#3
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Montana Master
Join Date: Apr 2016
Location: Auburn
Posts: 879
M.O.C. #18474
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Agree with the above, however check the stainless line and and make sure it doesn't have the bad thread on it.
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05-18-2018, 09:15 AM
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#4
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Montana Master
Join Date: Feb 2003
Location: Englewood
Posts: 3,095
M.O.C. #164
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Quote:
Originally Posted by adams7806
We bought a new Dometic 320 toilet and my hubby is going to install it tomorrow. The water supply line is too tall to connect to the new toilet so he has to use a stainless flexible water line attached to the existing pex line and toilet. The problem is the 1/2" stainless fitting keeps cross threading on the toilet's 1/2 male fitting (factory installed fitting).
Suggestions? I sure hope so! I want my new toilet! LOL
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No need to use the flex stainless you can go direct to the toilet with Pex using Flair it Brand fittings available at most hardware stores attached is the fitting that goes to the toilet buy a short length of Pex and a Flair-It fitting to extend your supply line the fitting are Very easy to use .
https://www.doitbest.com/products/48...iABEgIPdvD_BwE
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05-18-2018, 09:19 AM
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#5
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Montana Master
Join Date: Feb 2003
Location: Englewood
Posts: 3,095
M.O.C. #164
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Quote:
Originally Posted by kdeiss
No need to use the flex stainless you can go direct to the toilet with Pex using Flair it Brand fittings available at most hardware stores attached is the fitting that goes to the toilet buy a short length of Pex and a Flair-It fitting to extend your supply line the fitting are Very easy to use .
https://www.doitbest.com/products/48...iABEgIPdvD_BwE
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Here is the Flair It Coupling
https://www.doitbest.com/products/48...SABEgJlS_D_BwE
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05-19-2018, 09:50 PM
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#6
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Montana Master
Join Date: Sep 2017
Location: Willis
Posts: 896
M.O.C. #20587
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I sure would like to consider replacing our thetford but would get into a world of trouble with all those adapters and plumbing fittings. I'm a silver solder kind of guy - worked in a/c and refrigerator repair 40 years. Plumbing scares the crap out of me.
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2018 Montana 3791RD (SOLD)
2017 Ram 3500 DRW 6.7 Cummins Aisin, B&W RVK3600 (SOLD)
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05-20-2018, 04:53 AM
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#7
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Montana Master
Join Date: Oct 2017
Location: Bastrop
Posts: 2,892
M.O.C. #20753
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I have done some PEC plumbing recently. It is much much easier to play with than PVC. Just need the right crimpers.
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Mocha, one-eyed toothless, hurricane survivor, Pirate dog
2019 20th Anniversary Edition 3701LK
B&W 20K for Ford OEM Puck
2018 Ford F-350 Lariat CCLB PSD DRW KJ5CQH
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05-20-2018, 06:16 AM
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#8
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Montana Fan
Join Date: Apr 2018
Location: Omaha
Posts: 143
M.O.C. #21598
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Quote:
Originally Posted by masterdrago
I sure would like to consider replacing our thetford but would get into a world of trouble with all those adapters and plumbing fittings. I'm a silver solder kind of guy - worked in a/c and refrigerator repair 40 years. Plumbing scares the crap out of me.
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Had problems with mine from day one. After the dealer sent a mobile tech out four times I bought the 320. Install would have been easy enough but, with work I didn’t have the time so, I asked the tech. He charged me 45 to do it.
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2017 HC 345RL
2015 F-250
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05-20-2018, 07:18 AM
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#9
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Montana Master
Join Date: May 2017
Location: new caney
Posts: 1,050
M.O.C. #19873
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Quote:
Originally Posted by Mtncrash1
Had problems with mine from day one. After the dealer sent a mobile tech out four times I bought the 320. Install would have been easy enough but, with work I didn’t have the time so, I asked the tech. He charged me 45 to do it.
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And it probably took him 20 to 30 minutes to do it. Still a great deal. It took me an hour start to finish with an cut-off valve using pex but this is an great improvement over the thretford. The wife had an hard time understanding why i replaced something that wasn't broke but i didn't want to wait till i had an horror story to tell.
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05-20-2018, 07:58 AM
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#10
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Montana Fan
Join Date: Apr 2018
Location: Omaha
Posts: 143
M.O.C. #21598
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Quote:
Originally Posted by Texan
And it probably took him 20 to 30 minutes to do it. Still a great deal. It took me an hour start to finish with an cut-off valve using pex but this is an great improvement over the thretford. The wife had an hard time understanding why i replaced something that wasn't broke but i didn't want to wait till i had an horror story to tell.
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Must be a wife thing. Took me a few tries to explain it to mine as well.
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2017 HC 345RL
2015 F-250
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05-20-2018, 08:04 AM
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#11
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Montana Master
Join Date: Feb 2003
Location: Englewood
Posts: 3,095
M.O.C. #164
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[QUOTE=masterdrago;1099012]I sure would like to consider replacing our thetford but would get into a world of trouble with all those adapters and plumbing fittings. I'm a silver solder kind of guy - worked in a/c and refrigerator repair 40 years. Plumbing scares the crap out of me
Flair it fittings are quite easy to use Makes a Plummer out of all of us! If you have an interest just Google How to use Flair-it fittings! Several vedio's out their. In over 15 years never a leak!
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05-20-2018, 08:15 AM
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#12
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Montana Master
Join Date: May 2018
Location: livingston,tx
Posts: 558
M.O.C. #21685
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What is it exactly that fails and causes the Thetford toilets to leak ?
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05-20-2018, 08:19 AM
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#13
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Montana Master
Join Date: Sep 2010
Location: North East
Posts: 1,050
M.O.C. #10758
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No one has mentioned sharkbite, I'd use a shark bite, easy peasy.
PEX, PVC, or copper, either works great in a sharkbite
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05-20-2018, 08:31 AM
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#14
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Montana Fan
Join Date: Apr 2018
Location: Omaha
Posts: 143
M.O.C. #21598
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Quote:
Originally Posted by Kyle and Lisa
What is it exactly that fails and causes the Thetford toilets to leak ?
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Not exactly sure where all the problems are. On mine the bowl wouldn’t hold water. They made some adjustments then, replaced the seal twice and then put in a new ball, seal and, pedal. The tech told me it looked like the porcelain wasn’t shaped right.
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2017 HC 345RL
2015 F-250
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05-20-2018, 08:52 AM
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#15
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Montana Master
Join Date: May 2018
Location: livingston,tx
Posts: 558
M.O.C. #21685
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We have been on the road for 8 months with no issues with a 2018 unit picked up in September. I would think it could be repaired with better quality parts rather than buying a new toilet.
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05-20-2018, 09:00 AM
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#16
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Montana Fan
Join Date: Apr 2018
Location: Omaha
Posts: 143
M.O.C. #21598
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Quote:
Originally Posted by Kyle and Lisa
We have been on the road for 8 months with no issues with a 2018 unit picked up in September. I would think it could be repaired with better quality parts rather than buying a new toilet.
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We were at the point of total replacement anyway. Sure it would have been under warranty but after talking to the dealer, the tech and reading about other problems I decided to pay the money for peace of mind.
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2017 HC 345RL
2015 F-250
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05-20-2018, 09:12 AM
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#17
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Montana Master
Join Date: May 2018
Location: livingston,tx
Posts: 558
M.O.C. #21685
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Yes I understand, I just would like for someone to explain to me exactly what it is that fails and causes a flooding issue. The water flush valve or what ?
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05-20-2018, 09:13 AM
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#18
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Montana Master
Join Date: May 2017
Location: new caney
Posts: 1,050
M.O.C. #19873
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Quote:
Originally Posted by Kyle and Lisa
We have been on the road for 8 months with no issues with a 2018 unit picked up in September. I would think it could be repaired with better quality parts rather than buying a new toilet.
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With flooding your rv being one of the worst things that could happen to your rv and an new dometic with sprayer for 199.00 at ppl , i decided to go ahead and change it out before the inevitable happened. This might be one of those things where the old adage 'if it ain't broke don't fix it' may not apply.
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05-20-2018, 09:47 AM
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#19
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Montana Fan
Join Date: Apr 2018
Location: Omaha
Posts: 143
M.O.C. #21598
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Quote:
Originally Posted by Kyle and Lisa
Yes I understand, I just would like for someone to explain to me exactly what it is that fails and causes a flooding issue. The water flush valve or what ?
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Not having the flooding problem and, without doing a search my educated guess would be this. The water valve on the toilet starts leaking on either the intake side or discharge side. If your bowl holds water and it’s leaking on that side it will overfill and flood the camper. If it leaks at the bowl seal it will do the same or even fill your black water tank and flood your camper. If it’s on the intake side of the valve it will just flood the camper.
Hope that helped.
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2017 HC 345RL
2015 F-250
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05-20-2018, 10:12 AM
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#20
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Montana Master
Join Date: Apr 2006
Location: Mesa az
Posts: 2,945
M.O.C. #5651
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I heard several people on here recommend sharkbite. Also the guy at Home Depot loved them and said he wished they have been invented 50 years ago!! HD had a demo pex pipe on the wall with a shark bite and the removal tool. Just slide it on firmly and you can yank on it all you want. Slide on the removal tool and press a bit and it all slips right off. I did it on my recent install with no problem. Oh, and I bought a cutter tool and it went thru the pex like butter. MUCH easier than trying to use a utility knife or a hack saw.
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Tom and Gail
2013 Mountaineer 362
2012 Silverado 2500
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