okay, here's a diagram: http://i14.photobucket.com/albums/a320/tripordia/diagram.gif The weight doesn't slide in a track except for the very beginning, but my next one will have a complete track. The spring is from a desk lamp, and the valve is 3/4 inches. The purpose of this setup is so that the we...

I know that some people have attached springs directly to the handles of ball valves, but I'm using a different method, and am wondering if others have tried it. The spring is connected to a weight which is then tied to the handle of the valve, and only after the weight has travelled a bit does it p...