Quote:
Originally Posted by Patch
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.
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all the tanks are the same only the regulator just needs to be dialed down (only time here) and the bleed off needs to be swapped ($15 part)
explain your situation and they should know what to do.
im betting they are getting supplied from AIRGAS any ways, in that case the tank will be swapped out as im sure they rent them
when you go with a low pressure tank (22PSI bleed) you will be able to withdraw much more liquid so it is by far a better deal