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Nick: You've gotten way off the subject. The statement was made that you 
cannot use a scuba regulator for 100% oxygen. I said "nonsense". I stand 
by that answer. Talk to any gas supplier and ask if insurance 
requirements, OSHA regulations, DOT regulations, EPA regulations, etc. 
have any bearing on the way they do business, what they tell customers to 
do with regard to the materials that they sell, and how much it costs for 
them to do business. Nobody is suggesting that you slather grease onto 
oxygen orings. What I have suggested and what you find to be heretical is 
the fact that a new US Divers, Poseidon, Sherwood, Dacor and likely many 
others out of the box can be used for 100% oxygen service straight out of 
the box. I've got a set of twin steel 72's connected with a Benjamin 
valve. One tank was purchased in 1964, the second one in 1984. The 
Benjamin valve was purchased in 1986. These three items have been joined 
together since 1986 when I first filled them with 100% O2. The tanks and 
valves have never been oxygen cleaned and they have never been below 
500psi O2 in 8 years except for annual maintenance 8 years. I know, I know, 
I'm the special case who is 
the only person in the world to be able to do this. I know a dozen other 
divers who have clean but not oxygen cleaned tanks filled with O2 for 
longer or shorter periods of time. There haven't been any problems. I 
know, I know, I and my dozen friends are the only ones who can do this 
and get away with it. Since you cannot think of 12 examples of non oxygen 
cleaned regulator 
failure give me three examples. You cannot use the space shuttle (nice 
try though) as an example of a scuba regulator failure even though the 
shuttle was underwater at the end; it wasn't meant to be. If you cannot 
come up with at least one documented case, then I believe you are simply 
repeating something you read or heard in the past for which you haven't a 
shread of evidence.

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