Product review (2 stars): It fits. Don't know if it works. Not for toilet.
Seemed like a good idea for my weekend home. The part fits and works for the icemaker and dishwasher. The version for the toilet does now work. Will not let enough water in to fill the tank.

Now, I don't know if they actually work in an emergency until I have an emergency. It seems that you will never know if it works, only if it does not.