11
Introduction/OperationProduct Manual - Perma-Cyl
®
w/ FlexFill™ Piping Option
Photo 3 - Vacuum Evacuation Port with Cover
Evacuation
Port
Vacuum Evacuation Port
Unlike bulk tanks, Perma Cyl storage vessels are normally
not provided with an on-board method of taking a vacuum
reading. The vacuum evacuation port is sealed using a
stainless steel disk with O-rings and a protective cover is
placed over it (see Photo 3). Due to the relatively small
volume of the annular vacuum space, taking vacuum
readings is normally not recommended since the vacuum
level is slightly reduced when taking this reading. The
troubleshooting portion of this manual gives steps on how
to determine if the vacuum might be weak. In the event
that the vacuum does need to be checked, a trained vacuum
technician would have to bring the appropriate equipment
to get this done. In most cases where a vacuum has been
compromised, it is often more economical to swap out the
tank.
Figure 2 - Schematic for 2000/3000 VHP
2000/3000VHP Operation
The plumbing design for the 2000/3000 VHP Perma-Cyl
system is different from the models described in the previous
section. These models do not contain internal vaporization
or pressure build coils. For the 2000 and 3000 models, all
pressure building and process vaporization is provided by
two external vaporizers. This plumbing conguration is
commonly referred to as Option 09 or the ZX package.
2000 and 3000 VHP Primary Plumbing
Circuits
(Refer to Figure 2)
Fill
The Fill Plumbing Circuit on these two models is the same as
the models described in the previous section (see page 8).
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