Replacement Dometic 300 series toilet water valve

I am not of any help for your question but wanted to say I feel your pain in that I had the same problem and almost flooded the entire rv when the valve wouldn't shutoff and continued to fill the toilet bowl. Dometic replaced mine under warranty and I replaced it myself. After doing this I cut the old one apart to see what made it tick. Well what I saw made me wonder how any company would dare provide such **** to the public. I'd almost think any other source for this valve must be an improvement.