Taylor-Wharton RS-234 - Manual (Page 10)

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both pressure building valves (V-4 & 5). When the container pressure reaches 75 psig (5.2 bar), set the output pressure
regulator for the desired delivery pressure.
On most installations the outlet of the economizer regulator (R-2) should be piped to the inlet of the vaporizer. This
will help conserve product. See the explanation of the economizer in the component description section.
On some installations it may be desirable to allow the economizer regulator (R-2) to vent to atmosphere. This will
prevent pressure from ever building high enough to lift the safety valves (SV-1 & SV-2). The liquid inside the tank
will remain colder and the venting noise of the safety valves will be avoided.
Withdrawing Liquid from the Container
Attach a transfer hose to the connection labeled VAPORIZER INLET and open the adjacent LIQUID
WITHDRAWAL (V-2) valve. The pressure in the container will drive liquid product out through the valve as long as
the container pressure exceeds that of the receiver. The rate of liquid withdrawal from these containers is variable
depending on the container pressure and the saturation temperature of the liquid.
CAUTION:
To avoid contamination, close the LIQUID WITHDRAWAL (V-2) valve on an empty container
before disconnecting the transfer line. Protect hose ends. Moisture will condense within a cold open
hose and will be carried to equipment during the next use.