Air Gap Graphic

Anyone have a good airgap graphic ?

Jim

http://www.nachi.org/forum/f2/cant-good-73487/#post929754

attached…

https://encrypted-tbn0.google.com/images?q=tbn:ANd9GcRewryn02saAuAW-9Asl3PGL0o2SFwIz_sVHBgCjz8N2pWTiDiO