In Reply to: anti-siphon valve posted by colin on 08/11/03 at 11:13 AM:
Colin:
Try the following site:
http://www.engines1.com/atomic4_replacement.html
Go to the bottom of the page on the right hand side, there's a beautiful antisiphon valve there.
You can generally get one from any Marine store, however, the one at the above site is the nicest I've seen.
Good Luck,
Steve Kaminsky