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12-17-2017, 08:18 AM
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#1
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Senior Member
Join Date: Feb 2014
Location: radium hot springs bc
Posts: 2,007
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toilet flush valve
Just wondering if anyone has a suggestion for the abrupt closing on our Dometic porcelain toilet foot valve. Water pressure is at a steady 40#. Don't want to dismantle the whole toilet if it can be fixed with some sort of accumulator/buffer on the incoming line. Presently the water lines at the back of the toilet seem to jump when the valve is closed. Does not matter if it's done slowly or quickly. Any and all suggestions appreciated.
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2018 Ram 3500 6.4 Harvest Edition
2018 Cougar 27RESWE
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12-17-2017, 02:15 PM
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#2
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,339
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If it shuts the water off, I say leave it alone. Most likely the pex line isn’t clamped down and it jumps with the pressure change.
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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12-17-2017, 06:05 PM
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#3
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Senior Member
Join Date: Feb 2014
Location: radium hot springs bc
Posts: 2,007
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Quote:
Originally Posted by chuckster57
If it shuts the water off, I say leave it alone. Most likely the pex line isn’t clamped down and it jumps with the pressure change.
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Thanks chuckster57. It does work well, holds water, etc.
Will look at securing the pex, if not it's not that much of an annoyance.
__________________
2018 Ram 3500 6.4 Harvest Edition
2018 Cougar 27RESWE
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12-18-2017, 03:17 AM
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#4
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Senior Member
Join Date: Oct 2014
Location: Germantown, TN
Posts: 6,330
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Joe, it would also be my opinion that it isn't broken, so don't fix it. I would actually find the snap of it closing comforting. It means it is working just fine.
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Jim in Memphis, Wife of 51 years is Brenda
2019 F450 6.7 Powerstroke
2018 Mobile Suites 40RSSA
2021 40' Jayco Eagle
2001 Road king w/matching Harley sidecar
2021 Yamaha X2 Wolverine 1000
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12-18-2017, 03:30 AM
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#5
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Senior Member
Join Date: Aug 2017
Location: Dandridge TN
Posts: 260
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Mine operates in the same way. It has a definite thump when we let off the pedal and I have observed the pex behind and have never seen it move or jump when we do that. If its moving in the wall then it is what it is.
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12-18-2017, 06:02 AM
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#6
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Senior Member
Join Date: Jan 2012
Location: Central San Joaguin Valley, CA
Posts: 2,117
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Go to Lowe's or HD and get a water hammer resistor. They have one that is mounted on a "T" fitting with SharkBite fittings. It forms an air cushion that reduces or eliminates the water hammer.
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Jack & Marty
2018 Laredo 298 SRL
2011 F-250 SB Crew Cab 4x4 6.7L
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12-18-2017, 07:10 AM
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#7
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Senior Member
Join Date: Feb 2014
Location: radium hot springs bc
Posts: 2,007
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Quote:
Originally Posted by jsmith948
Go to Lowe's or HD and get a water hammer resistor. They have one that is mounted on a "T" fitting with SharkBite fittings. It forms an air cushion that reduces or eliminates the water hammer.
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Thanks will try that. As I mentioned earlier would be nice to quiet the thump down. DW says I wake her up on my nightly bathroom visits. And as they say "happy wife happy life". Will report back here if it works.
__________________
2018 Ram 3500 6.4 Harvest Edition
2018 Cougar 27RESWE
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12-18-2017, 07:53 AM
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#8
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Senior Member
Join Date: Jan 2014
Location: Winnipeg, Canada
Posts: 1,196
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Quote:
Originally Posted by jsmith948
Go to Lowe's or HD and get a water hammer resistor. They have one that is mounted on a "T" fitting with SharkBite fittings. It forms an air cushion that reduces or eliminates the water hammer.
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When I tried this potential solution a few years back, it did not provide the desired benefit. I installed it just prior to the toilet inlet. Maybe I bought a bad resistor.
Any suggestions on where to install and take advantage of a water hammer resistor would be appreciated.
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2018 Jayco Eagle HT 265BHS (previous: 2015 23RB Passport Elite, ProPride)
2015 F250 XLT SB Crew, 6.2l gas
PullRite 16K SuperGlide w/SuperRail
Reese 5th Airborne (bagged) Pin Box
RoadMaster Shock Kit
X-Factor Cross Bracing
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12-18-2017, 08:35 AM
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#9
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,995
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Quote:
Originally Posted by slow
When I tried this potential solution a few years back, it did not provide the desired benefit. I installed it just prior to the toilet inlet. Maybe I bought a bad resistor.
Any suggestions on where to install and take advantage of a water hammer resistor would be appreciated.
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I did the same as you, installed an air hammer arrester in our Springdale. I located it behind the toilet, in the supply line. It didn't make any difference at all. In fact, all I really did was add an extra fitting that could leak and a place to hold water during winterizing the trailer. For me, it wasn't worth the effort and expense for the results achieved.
One workaround that might help is to turn off the water pump (or city water connection) before going to bed. That way there's no water pressure to cause the "bump" and the toilet will still "open to let liquids flow into the black tank"... Probably not a good idea if there's a regular deposit of solids, but for overnight use, it worked for us. With the Cougar, the "bump" is in the back of the trailer, not up front by the bedroom/bath, so we live with it. Over the years, it's sort of "blended with other noises" and we don't notice it as much as we initially did.
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John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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