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11-17-2018, 09:00 AM
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#1
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Established Member
Join Date: Sep 2018
Location: Carefree
Posts: 12
M.O.C. #22704
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Toilet pressure
I had a toilet leak last week and I bought a new Dometic 320 with a hand spray to replace the old one. The install was quite easy. However, when I leak checked it, I had a small leak on the back where the hose from the sprayer and the flush valve hose connect. I called Dometic and the troubleshooting person inquired on the water pressure. I have a newly installed adjustable regulator set at 65psi was my reply. The troubleshooter replied that their toilets have a max pressure of 45psi. Sure enough, I dialed the pressure down to 45psi and so far the leak has stopped. I guess I will install an inline regulator on the toilet line. I have an old camping world brass regulator laying around and I think those are approximately 45psi.
It just seems to me they should design it to withstand 65-75psi and if not, it should state it somewhere on the product description. 45psi is not enough pressure to take a suitable shower.
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11-17-2018, 11:17 AM
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#2
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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Interesting. We had 320 (no sprayer) in our old rig and did six years with pressure up to 65 and never had an issue.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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11-17-2018, 11:25 AM
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#3
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,366
M.O.C. #4831
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Three years with a 320 (no sprayer) and pressure set to 65 with no leaks.
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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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11-17-2018, 01:43 PM
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#4
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Montana Master
Join Date: Jan 2018
Location: Thornville
Posts: 546
M.O.C. #21110
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Ok, is it safe to say the sprayer will only handle 45psi? That seems to be the common denominator in the lower pressure requirement.
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Darwin & Carla
2018.5 3701LK Montana
2022 3500HD Denali Duramax SRW
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11-17-2018, 03:01 PM
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#5
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Montana Master
Join Date: Jan 2018
Location: Austin
Posts: 2,420
M.O.C. #21044
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Domestic 320
I installed a domestic 320 in the front bath and have the regulator set to 55 psi and have had no leaks.
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MikenDebbie Aggie ‘77 in the sticks near Austin TX
2019 Chevy 3500 High Country DRW
2018 Montana 3921FB
Aussie Gus + Texas Heeler Jimmy
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11-17-2018, 08:21 PM
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#6
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Montana Master
Join Date: Sep 2017
Location: Tacoma
Posts: 1,567
M.O.C. #20475
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We run 65 all the time and no problems with Dometic toilet at all. Dot need the spray the shower is right there.
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Bob & Carol Washington St
2017 HC HM352RL 2018 Dodge 3500 laramie CC LB 4x4
Curt Q25 with puck system, Factory air bags
Happy Trails
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11-18-2018, 06:28 AM
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#7
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Montana Master
Join Date: May 2011
Location: Hixson
Posts: 3,436
M.O.C. #11397
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Dometic 320 with sprayer running 55psi and no leaks and we full time.
__________________
2018.5 Montana 3791RD
Full Timers 9/1/2010 through 1/16/2020.
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11-20-2018, 08:23 AM
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#8
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Established Member
Join Date: Sep 2018
Location: Carefree
Posts: 12
M.O.C. #22704
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Good news
Good news! I emailed Dometic about my toilet issues and Diane from Dometic responded. I called her and explained my problem. I didn’t mention it earlier but the flush valve also leaked the first ten flushes and then stopped. She stated that the recommended pressure for their toilets was approximately 45 psi but it should not leak at 65 psi. Her solution at first was to send a new valve but she changed her mind and decided to send a brand new toilet! That’s good customer service.
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