rvupgradestore.com Composet Products Fridge Defend
RV Life Magazine RV Park Reviews RV Trip Wizard

Author Topic: Problem With Toilet Valve  (Read 314 times)


  • ---
  • Posts: 52
  • 34' 1995 Fleetwood Bounder
Problem With Toilet Valve
« on: October 10, 2018, 06:06:00 PM »
I have a 1995 Fleetwood Bounder with a Thetford Aquamagic toilet. The filler won't shut off so I'm sure the valve needs to be replaced. Everything is in the back so I can't see anything. My question is if I lift the toilet so I can turn it is there a gasket I'll need to replace? I can't find anything online for that model. Thanks in advance.
Taking the road less traveled usually means a few bumps along the way, but a lot more freedom and happiness.

Gary RV_Wizard

  • Forum Staff
  • ---
  • *
  • Posts: 67630
  • RVer Emeritus
Re: Problem With Toilet Valve
« Reply #1 on: October 10, 2018, 07:03:58 PM »
There are many different toilets under the general Aqua Magic brand name, so please identify the specific model. Most of them, however, have a "closet flange seal" under the toilet.  I've heard of folks using a standard toilet bowl wax or rubber seal, but have no experience with that myself.  The Thetford part appears to be rubber and may well be reusable if you can't find one.

Here's a manual that covers several models.  More can be found on the Thetford Customer Support website.
Here is a seal on Amazon. Sure looks like the stndard hardware store item would work fine.
« Last Edit: October 10, 2018, 07:05:46 PM by Gary RV_Wizard »
Gary Brinck
Summers: Black Mountain, NC
Home: Ocala National Forest, FL


  • ---
  • Posts: 109
Re: Problem With Toilet Valve
« Reply #2 on: October 11, 2018, 12:42:08 AM »
If you order a water valve seal kit it will come with a new seal to reinstall the toilet.

If you are replacing the water valve seal think about replacing the ball valve seal plus the vacuum breaker.  You will get a toilet seal with each kit giving you two extra.
JD & Kathy
2016 Sightseer 33C
2009 Saturn Vue

Rene T

  • Forum Staff
  • ---
  • *
  • Posts: 13757
  • Every day is payday and every payday I have off
Re: Problem With Toilet Valve
« Reply #3 on: October 11, 2018, 07:18:22 AM »
If it was me, I'd replaced that 23 year old toilet with a new one.
Rene, Lucille & co-pilot Buddy
AKA  Pep N Mem
2011 Chevy Duramax 2500 HD 4X4
2011 Montana High Country 343RL
From the Granite State of NH
& Florida Snowbird in Lakeland FL

John From Detroit

  • ---
  • Posts: 22631
  • ^My New Home^
    • Diabetics Forum
Re: Problem With Toilet Valve
« Reply #4 on: October 11, 2018, 05:34:15 PM »
At that age if you lift the toilet yes there is likely a gasket you will most likely need to replace.. IF you can get at the back I'm not sure if the vlave assembly is held on with one screw or just pull it off.. but there may be linkages you need to disconnect/recoonnect.

The gasket is just very large "Sewer Donut" like thing. any RV place that handles Tetford should have ''em  likely int the 10 or less range. but I'm guessing on that.

Nothing adds excitement like something that is none of your business
My Home is where I park it.


  • ---
  • Posts: 1566
  • Phormer Phantom Phixer
Re: Problem With Toilet Valve
« Reply #5 on: October 12, 2018, 08:53:42 AM »
I bought a valve repair kit and a ball seal repair kit for my 18 year old Thetford.  Both came with the donut gasket.
I got the thing apart and it was so corroded underneath that I threw it on the trash pile and got a new one.
Wally Crow
Retired 30+ year ASE Master Auto Tech
Y2K Bounder 36S F53
'03 Jeep Wrangler Sahara
FMCA F494768

"Well, my time of not taking you seriously is coming to a middle."