Mr. Manfrenjensenden
Contributor
If those valves are assembled correctly, the picture would indicate they are wide open, and the tanks are empty. I would be a bit concerned about them being stored like that. I would want to pop the valve for a look inside.
Yeah, I noticed those green open indicators too after my initial posts. I've never taken off a valve before -- is it as simple as unscrewing by hand (and then peering in with a flashlight)?
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Edit: I answered my own question with this video: