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a while back (2 yrs) i was involved in the testing and certifications
of scuba equipment for the EC (european community) 
for what its worth, 
the testing is very expenseve,
 and it works.
the ec will put each regulator 1st and 2nd stage through tests the americans
would never think about.
 no regulator passes first round.
changes are made to satify the testers ,,then back to the test. this is done
untill it is right. 
some of the requirements are a bit on the wierd side  ie. on the first stage,
the hp. port MUST have a restrictor in it. here in the us we have it in the hp
hose, 
but the EC wants the restricter in the 1st stage body. so....now you have TWO
restricters, no big deal but added cost. the flow rates are tested at diff.
tank pressures and temps.

at the begining, i thought it was kinda bullshit,,,but after being part of it,
i kinda hate to say ,,,but the EC is on the right track.

any regulator that has passed th CE stuff is a good regulator.
look at it this way...if the mfg's are TOUTING that their reg passed the
CE tests and how hard the tests are, 
then the other mfg's of regs that have passed are in the same group as them.
the tests DO NOT score points ie 85%///91%///etc... you either pass or you
fail...NO IFS ANDS OR BUTTS.

this next statement is NOT open to flames, (so please dont try it)

based on the tests performed,, if TWO DIFFERENT regulators pass
then,,,they are of the near same performace....
which means a DACOR Regulator will perform as well as a SCUBAPRO as well as
any other reg that has undergone EC testing.
and also,,,once a reg is certified, NO CHANGES can be made to it without
retesting $$$$$. my feeling is that the EC made the tests hard to keep US
products off their soil,,,well to bad cause we are still passin.

hope this has helped
jimh 
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