Have you tried changing the cap on a Rustoleum Painter's Touch spray paint can? If you did, you were in for a big surprise. The Painter's Touch cans come with a male valve so you cannot use your regular caps. The YL Rusto Female cap comes to the rescue!http://www.youtube.com/watch?v=-FgYr6pXNUE
The YL Rusto (Rustoleum) cap is the same as a New York Fat cap with the stem cut off and drilled into so it fits the male valve on the Painter's Touch cans. The caps are hand made by Ouija YL from Connecticut and spray similar to any US fat cap.