Recently noticed that the toilet would leak at random times. After looking at the installation and reading up on the Thetford valve. You can find replacement valves here
https://smile.amazon.com/gp/product/B002UC1AYQ
The installation was fairly easy and had enough room where the toilet didn't need to be removed. In the process, replaced the supply feed with a Shark Bite connector that has a shut off valve. A bit of thought in case needed to quickly turn off the water for maintenance or installation of a spray unit.
Decided to keep the old valve. After looking at it, the black portion of the valve is very soft plastic, so this is the cause of most leaks. If you don't connect the supply line correctly, the threads can easily strip. Will see if there can be a fitting that is a bit more sturdy so it can be a spare part.
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