Toilet Supply Line Leak
Posted 02 May 2019 - 02:16 PM
Posted 02 May 2019 - 02:51 PM
Sounds like you need a new replacement flushing water valve for the back of your toilet, if it is leaking, (assuming you don't have something obvious wrong like a bad PEX fitting or connection or a split PEX hose, (or as is often the case, a problematic installation where the "technician" cross-threaded the water line onto the flush water valve behind the toilet, which they've been known to do on many occasions.)
For your Thetford Aqua-Magic V, this is the replacement valve you'll need to change out if it is leaking. Even if you don't need one of these right away, I guarantee you will eventually, as they are known to be a weak spot in their design. Get one for a spare at least.
And another great addition would be to add an isolation valve to the water supply line to the toilet so that if you do have a leak, you can secure the water supply to it and open it as you need just to flush, then turn it off again. Could be a "vacation saver" and it's relatively cheap insurance if a leak pops up.
Or you can get them both here:
This is a direct replacement valve for the Thetford AquaMagic V toilet used by Casita since about 2004. We also have the valve for the earlier AquaMagic IV used from approximately 2000 until sometime in 04. The IV would be identifyed by its two foot pedals. About a 20 minute job to replace. The symptom dictating replacement is water pouring out the back of the toilet. Note the next product is an emergency cure for this problem that still lets you use the rest of your water system. (see Toilet Supply Mod)
Thetford AquaMagic V replacement valve $41.95
TOILET SUPPLY MOD
This a simple mod that could save a camping trip from disaster. Cut the supply line to the toilet and plug in this quick connect ¼ turn valve. If your toilet valve leaks or won’t stop flushing simply cut off the water to the toilet as a temporary measure until you get your problem fixed, and keep on camping! The toilet can be flushed manually using your shower head. This mod is also a benefit to Boondockers as it allows you to flush the toilet without consuming water (the foot pedal still works) or recycling gray water or using the shower head as need dictates.
Toilet Supply Mod $12.49
Edited by Euphoria, 02 May 2019 - 03:10 PM.
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"If I have seen a little further, it is by standing on the shoulders of giants."
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Greg & Brenda
2008 17' Casita Spirit Deluxe
Casita Club # 2754
Posted 21 July 2019 - 04:57 PM
Euphoria, thanks for the timely information.
The toilet valve on our 2005 developed an unstoppable leak at the beginning of an 8 day trip. Fortunately we weren't planning on boondocking so it was inconvenient but not a major problem. In 14 years of use, this is the first real problem we've had - can't really complain.
2005 17' LD Nova & 2001 Toyota 4Runner
pre-Nova was Ova-the-Rainbow 1999 17' LD (sold)
Don't believe everything you think.
Posted 19 April 2020 - 01:07 PM
Hi! I had this problem, as well. Upon closer inspection, the gasket of the last elbow after it was removed was slightly discolored and uneven on one side, causing the leak.
So I decided to put in the water shut off valve prior to fixing that leak ( w city water disconnected) using a shark bite on/off water supply, per other's recommendations.
Instead of replacing the leaky gasket at the last elbow with the same item, I switched it to a 1/2 inch flexible water supply connector that gave more length & flexibility at that joint, again using the 1/2 inch shark bite adaptor. The 1/2 inch water supply hose i used is usually reserved for the sink, but the hardware store did not have a toilet 1/2 flexible water supply (RV supplies might have that). I used plumbing tape on threads. My thetford replacement part remains unused.
Edited by Melanim, 19 April 2020 - 07:37 PM.
- Beadfingers likes this
Posted 19 April 2020 - 01:16 PM
I caused this by placing things like chairs/charcoal/antifreeze behind the toilet when traveling...which shifted around & applied pressure to the PEX pipe. BTW, it took fewer than 10 minutes putting this together once i had the parts. I'll let ya'll know how my fix holds up.
OK, for those that know, why isn't a flexible supply line standard? Is it contraindicated? Is using a brass fitting on plastic acceptable practice?
Edited by Melanim, 19 April 2020 - 07:40 PM.