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The most likely time for a tank overfill to cause any problems is
during filling. Therefore, the safety of the people filling the tanks is a
much bigger issue than who is diving with them. Since it is techincally
illegal to fill past the DOT standards this creates major liability for the
stores and could invalidate insurance. I am not saying the tanks can or
can't handle the load, this is just what the regualtions say. Of course,
the Genesis tanks have an exemption that only requires them to be hydo'd to
5,000PSI (I think) since that is as high as many test facilities go. It
kind of makes you wonder about just how they arrive at the ratings in the
first place. Anyone know?
However, a more likely problem would be with the valves. No one
mentioned what valves they are using on their low pressure steels, but to
answer the DIN question,IMHO, this is their primary advantage. They are
rated to a higher pressure than standard k valves which is between 3,000
and 3,200 PSI and hence have burst disks that go at highter pressures which
can be left operative. The trapped O-ring and screw in connection make a
much more secure fit that can handle higher loads. I have never seen an
overfiled tank go, but I have seen it blow o-rings.
After erasing the memory in two EONS I personally have an incentive
not to overfill.
Daniel Lloyd
dlloyd@ma*.ut*.ed*
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