Specifications

8
OPERATION OF CRYO-CYL 120 / 180 / 230 LP
21
General
The Cryo-Cyl 120/180/230 LP cryogenic liquid cylin-
d
ers have been designed to transport, store and
dispense liquid oxygen, nitrogen or argon in their liq-
uid 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
p
ressure 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).
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