bradshsi:
I wonder what the aforementioned BCD Nitrox conversion kit actually consists of ?
My guess is a sachet of dishwashing soap and an important looking sticker....
My guess is a few replacement o-rings for the low pressure inflator.
I can make a guess at how this O2 cleaning requirement oozed and spread like a virus.
Partial pressure fills put 100% O2 at several hundred pounds into a tank. So it makes sense to O2 clean a "nitrox" tank.
A 1st stage reg gets hooked up to that O2 cleaned tank. Even though it never sees pure O2 is does see about 80atm ppO2. Some benefit in O2 cleaning, and maybe even changing materials for o-rings. And doesn't it make sense to have an O2 clean reg hooked to the O2 cleaned tank?
The O2 clean 1st stage feeds an 2nd stage. If you O2 clean the 1st stage, you ought to O2 clean the 2nd, right? Of course is never sees more than about 10ata of nitrox, never sees 100% O2, and max ppO2 is only about 4ata.
If you've gone so far as to require 2nd stages to be O2 cleaned, then why not the LPI? Makes sense, right? (of course, only if you creep up on it like this and don't really look at what the requirement it).
Now you've O2 cleaned your LPI or combo inflator/octo. Why not O2 clean the BCD and snorkel and masks while you're at it.
