Ok I have the straight type of antisiphon valve on my tank in my Sprint 207DC and when I took it off the fitting that is threaded into the tank and looked in it there was nothing there. Its completely open, just a metal tube!! Is that how they are supposed to look?? I mean it was like looking down a piece of pipe. Does anybody have a picture of what one of these looks like on the inside or a diagram? I am including the link to the type I have

http://store.philaboat.com/phi...33802

Thanks
Wes