Quote:
Originally Posted by V2-V3
send it back to the supplier and dont pay for it, stress the fact that you requested (ordered) a low presser NL55 22PSI
the high pressure tanks are for gas withdraw only, you are only after the LIquid
the blow off is normal for high pressure tanks, even low pressure tanks will blow off occasionally. no danger here tho
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Ahh....therein lies the problem.
I go through a mom and pop welding supply (1/3 the price of airgas and praxair in my area). I'm pretty familiar with their yard, and haven't seen any other dewars (unless the 230 L's are lower pressure). They normally have 1 to 4 LN2 tanks around. These high pressure tanks are what they fill my personal dewars with.
The 350psi is where the popoff is supposed to occur - but I got concerned with the rapid rise from 150 to 350 and the frequent loud popoffs in my garage. The last time I rented one of these, it never popped off and it hung out at 250ish psi.
Thank you sir! Methinks I'll have to go back to just bringing my dewars to fill if I can't arrange a lower pressure dewar through them. I'm skeptical about them investing in alternative equipment just to tailor to me.