Franklin Fueling Systems NANOVAPOR NV-SS ST-1000, Installation And Operation Manual, Page: 25 / 60

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provided as in Fig. 9a. The flow path with the directional insert is provided in Fig. 9b.
Figure 9a
Figure 9b.
If access is only available in the center of the tank, as shown in Fig. 10a below, an insert is
required to direct the flow to both ends of the tank to ensure complete coverage if no directional
flow is provided as in Fig. 10a. The flow path with the directional insert is shown in Fig. 10b.
Figure 10a
Dual direction
flow drop tube
Figure 10b
Choosing the inlet and outlet ports or openings on the UST is also important. The largest opening
on the UST should be used for the inlet. This is typically a 100 mm (4”) opening. This opening
must not have any internal pipework connected to it such as a drop pipe. Any internal pipework
must be removed from the inlet opening or a different opening should be used. If the largest
available opening that meets these requirements is less than 75 mm in diameter, contact FFS.