I get a little nervous when I see my name in the title of a thread.
Thanks, but I can't take full credit for it. I wanted to put a -3 bulkhead fitting there, but then I realized that the brass fitting provided by SafeAir1 has 27tpi NPT threads and is incompatible with the 24tpi of a standard AN bulkhead fitting.
After reading
Chad's site, I got (ok I stole) the idea to use the AN adapter fitting provided by SafeAir1 as the bulkhead fitting.
Here is what the other side looks like with a thick spacer and thin rubber washer installed.
