I am looking for a screw in value for the bathroom sink, it shuts the hot water down to a trickle when it gets too hot. I bought one years ago, but that company no longer exists.
Do you know where I can get one?:)

I have no idea -- However, if you want to limit the temperature at a single source without having to limit it at other sources, consider installing a point of use tempering valve (http://www.watts.com/pro/_productsFull_tree.asp?catId=64&parCat=311&pid=842&ref=2).