User Manual

Gas Withdrawal Circuit

The gas withdrawal circuit vaporizes cryogenic liquid and warms it to ambient temperatures for use in the

final application. Opening the gas withdrawal valve (V-5) allows liquid, driven by the pressure within the

vessel, to flow through the vaporizer (VC-1). The vaporizer uses heat from the ambient air to convert the

liquid into a gas and warm it. Should the vaporizer be damaged or require repair the vaporizer isolation valve

(V-2) may be closed to prevent loss of product. The vaporizer safety valve (SV-2) prevents excessive

pressure build-up should the gas withdrawal valve and vaporizer isolation valve be closed while the vaporizer

contains liquid or cold gas.

VC-1

SV-2

V-2

V-5

CN-2

Figure 5: Gas withdrawal circuit highlighted in blue.

(Frame omitted from view for clarity.)