FFS-1072 Forecourt Guide 2025 2 - Flipbook - Page 21
A
Distance from the seat surface of the upper drop tube to the bottom of the underground storage tank.
The seat surface will vary depending on the type of installation (see Figure 2).
B
95% tank volume - obtained from the tank chart provided by the tank manufacturer. To find the 95% tank
level on the tank chart, multiply the actual tank capacity by 95. Then find on the tank chart the level
measurement that matches the calculated volume the closest.
Note: If local codes allow the positive shut-off level to be different from 95%, the installing contractor
may adjust the “B” dimension per the tank chart to achieve the desired level.
Note: If tank tilt is an issue, the installing contractor may use best judgement to adjust “B” dimension
accordingly, so none of the fittings located on top of the tank are exposed to product due to overfilling.
Undermesh Fill
Adapter
Undermesh
Bucket
Inside Bucket
(Defender Series®)
A
MARKING & CUTTING THE TUBES
1. Mark the upper drop tube with the length
“X”
2. Mark the lower drop tube with
the
Upper Drop
Lower Drop
Cut
Dual Point
Measure from flange.
Poppeted Coaxial (EBW)
Measure from retaining
Non-Poppeted Coaxial
(EBW)
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