180 liter LN2 Supply Tank 4-1
Thermo Scientific
Section 4
Operation
The Cryo-Cyl 180 LP cryogenic liquid cylinders have been designed to
transport, store and dispense liquid oxygen, nitrogen or argon in their
liquid states only. Liquid product is generally used at ambient or very low
pressures. The Cryo-Cyl LP has a working pressure of 22 psig ( 1.5 BAR)
to allow for transfer into vented cryogenic dewars or equipment. The
pressure is maintained in the liquid cylinder through its normal heat leak
of the cylinder. The pressure will rise in the closed cylinder as its liquid
contents boil off. It is normal for the pressure to reach the relief valve
setting of 22 psi (1.5 BAR) and vent slowly into the atmosphere. The
transportation of the cryogenic products in these liquid cylinders is not
regulated by the DOT/TC since the pressure is normally below 25 psi (1.7
bar).
