Mailing List Archive

Mailing List: techdiver

Message Display

Does anybody know the real story behind the practice still taught 
by some agencies of turning tank valves a quarter-turn back after
opening them all the way?  I've "heard" that at one point in time
there may have been valves where this really was useful, but that 
it has long since become an anachronism (and a potential point of
confusion, albeit a small one, for someone who wants to quickly 
ensure their valve is on all the way).  I don't turn mine back, 
but on a couple of occasions some well-intentioned buddy or DM 
has "checked" my air supply and turned it back before I explained 
it (and in the case of the DM, just politely asked them to leave 
me and my gear alone).  Obviously, I'd prefer to know the whole
story before explaining to these guys why it's a stupid "rule".

So what's the truth?  Was the quarter-turn back ever a good idea?

- Todd

Navigate by Author: [Previous] [Next] [Author Search Index]
Navigate by Subject: [Previous] [Next] [Subject Search Index]

[Send Reply] [Send Message with New Topic]

[Search Selection] [Mailing List Home] [Home]