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Explanation of Figure 1 Dimensions <br /> A Distance from the seat surface of the upper drop tube to the bottom of the undergound storage tank . The seat <br /> surface will vary depending on the type of installation (see Figure 2 ) , <br /> B 95 % tank volume — obtained from the tank chart provided by the tank manufacturer. To find the 95 % <br /> tank level on the tank chart, multiply the actual tank capacity by . 95 . Then find on the tank chart the level <br /> measurement that matches the calculated volume the closest . <br /> Note : If local codes allow the positive shutoff level to be different from 95 % , the installing contractor may adjust <br /> the "B " dimension per the tank chart to achieve the desired level <br /> Note : If tank tilt is an issue , the installing contractor may use best judgment to adjust " B " dimension accordingly, <br /> so " . . . none of the fittings located on top of the tank are exposed to product due to overfilling , " per EPA <br /> 4OCFR280 <br /> Underneath Fill Adapter Underneath Bucket Inside Bucket <br /> (EBW Legacy Series ) (Phil-Tite Series) (Defender Series ) <br /> i <br /> 000 A <br /> A <br /> Figure 2: Installation Dimensions per Spill Container <br /> MARKING & CUTTING THE TUBES 2 . Mark the lower drop tube with the length "Y" <br /> 1 . Mark the upper drop tube with the length "X° calculated from Figure 1 . <br /> calculated from Figure 1 , measuring per Figure 3 : <br /> Tube <br /> Upper Drop Tubes Lower Drop Cut straight <br /> Dual Point <br /> i Measure from flange <br /> / Option: <br /> cut approx. 450 <br /> X Y <br /> Figure 4: Lower Drop Tube <br /> Poppeted Coaxial (EBW) <br /> Measure from retaining ring <br /> 4;;X <br /> LLNon-P' oppeted Coaxial (EBW) <br /> re from bottom of lug <br /> X .i <br /> Figure 3: Dimension X for Upper Drop Tube <br /> 5 <br />