Hmm, rules rules rules.......
So its the scuba industry that requires vis done each year.....DOT only requires it at hydro....
As per luxfer's inspection guide it requires tanks be visual inspected at least once in a 12 month period.
Now this is a bit off topic, but interesting none the less seeing as how people here are pretty against breaking the rules.....how many have a O2 cleaned luxfer tank.....how many dive nitrox in a luxfer tank......technically from their inspection manual, this is a no go "To eliminate the risk of fire and serious injury, never fill a Luxfer scuba cylinder with pure oxygen or oxygen-enriched air mixture or any other special gas"
No where in the manual does it say that you can o2 clean a luxfer cylinder.
(catalina is a lot different rules surprisingly)
So it seems we really only partially follow the rules.
That being said, would I VIP a pony bottle every year......yeah prolly, just because I can do it myself. But I would not be concerned by it going over by a few months or so.
Luxfer's come O2 cleaned from the factory. As do their valves. I sell more tanks than anyone. Each luxfer comes with a nice little green label that basically says "this tank is O2 cleaned by luxfer"