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Old 01-30-2013, 04:49 PM #1
Apollo918
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Hydro testing pressures

What pressures are 4500 bottles tested to? Local university does hydro testing but wants to know what pressures to test bottles to.
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Old 01-30-2013, 04:55 PM #2
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i have reports that it is 7500
3k tanks are 5k

is this accurate?
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Old 01-30-2013, 11:59 PM #3
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I believe it depends on the regulations for a specific tank manufacturer. There are some odd type things that go along with the test perameters as well. I don't recall specifics but it had something to do with expansion limits or something along those lines.

If you pull up a PDF of a tank's special perit, it will have the testing criteria in it - which will give you the pressure used for that tank manufacturer.


EDIT: Here is a special permit for a Luxfur cylinder: http://www.phmsa.dot.gov/staticfiles...2009100578.pdf . Read up on page 3, part b. The cylinder is to be filled to 5/3 of the marked cylinder pressure. The specifics I couldn't recall have to do with the elastic expansion (part b, ss 2.).
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Old 01-31-2013, 03:15 AM #4
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Quote:
Originally Posted by Apollo918 View Post
What pressures are 4500 bottles tested to? Local university does hydro testing but wants to know what pressures to test bottles to.
Apparently they don't do LEGAL hydros or they would know what they are doing. Do not get your bottle tested there or they may just turn it into trash.
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