Overhauled a Mistral the other day. Took it out for a test dive and although it breathed great, it started breathing wet. Examined the hoses - all fine. Mouthpiece valves - all fine. Duckbill - new and laying flat. I never took the mouthpiece out of my mouth during the dive. Guess my old-man eyes were not focusing correctly when I assembled it. When I first received it the main diaphragm was toast and all melted onto the rim of the bottom can. I ran the can through the ultra-sonic cleaner a few times and recall seeing the chrome was rubbed off in areas but apparently didn’t look too closely before slapping a new diaphragm in and re-assembling. When I took it apart again I couldn’t believe I had missed the corrosion holes and other assorted defects. The odd thing was that it was only about an hour after the dive when I took the cans apart and it was bone-dry under the diaphragm, around the levers and inside the bottom can. So while I’m pretty sure the corrosion was the cause of the wet breathing, I’m still not 100% sure. The corrosion does not go all the way through the can. Anyway, here’s a pic.
Anyone have an extra Mistral bottom can I can replace mine with? Thanks. Mark.