Several conversations have occurred recently where people mentioned their use of high pressure gas cylinders to boost cryogenic liquid cylinder output. Specifically, they are hooking a high pressure liquid cylinder to the vent of a liquid cylinder to push liquid out of the cylinder faster or to maintain a higher pressure for gas withdrawal.
Is there a risk and, if so, what?
As with almost anything..... maybe. The concern here would be that gas coming out of the high pressure liquid cylinder will increase the pressure in the liquid cylinder faster than the relief and rupture disk can relieve it. The net result of this is that the vessel could eventually reach burst pressure and blow.
As for me- I'd be interested in exploring how the equipment might be used to function as designed and still get the job done.....
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