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Since I haven't read that thread I'm not sure on what you are considering overfill. I fill mine to 3000 all the time. Is it an overfill? Yes but not like a cave fill. Would I cave fill mine..probably not.
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I have a PhD in Bovinian Excremetology.
"Dive till it hurts, hang till it stops."- Rick Kruzel
I do not consider the tank pressure rating a hard number to never cross. I have no concerns pushing a steel tank 10 to 20% over. I have seen LP steels, rated for 2640 being stored with 4400 with no issues (much to my surprise). Not something I am interested in doing, but it proves to me how well a LP steel can hold up.
I've had my LP108 doubles at 4200psi before when we wanted/needed more gas for a dive. Typically I fill my tanks to 3600psi. I did get HP130 doubles now and traded my LP108's because dive shops in south florida won't overfill like they do in cave country.
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-James
"You've got the rest of your life to work through any problem that comes up while diving"
NACD: "Learners Permit"
NAUI: OW
It depends. A 3000 psi fill in a 2400 psi tank is one thing, 3600 is another and 4200 is beyond prudent as it actually exceeds the test pressure (5/3rds the service pressure) of 4000 psi.
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Life is not measured by the number of breaths you take, but rather by the number of moments that take your breath away.
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