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�20,6w g-v o +an k - �c9vl�r w► eased <br /> Determine drop tube lengths <br /> Defender Spill Containment(Ref.) <br /> Seat surface of upper drop tube <br /> 0 <br /> rrX>> <br /> Upper Drop Tube Top of Tank <br /> �— Final Shutoff Volume" <br /> � f <br /> Overfill Prevention Valve/ <br /> "All <br /> (U.S.T.) <br /> Lower „B„ <br /> Drop Tube <br /> rrYrr <br /> 6" (152 mm) Max* <br /> Bottom of Tank Not to Scale <br /> * If local codes require this distance to be smaller, <br /> subtract less than 6"(152mm) <br /> Calculate final shutoff volume <br /> To find Upper Drop Tube length"X" <br /> pp p g To find Lower Drop Tube length"Y" <br /> Actual Tank Capacity <br /> Drop lube seal I —.P1 Final shutoff <br /> 1 T8� Gallons "A" J S� / surface to <br /> U bottom of tank "} volume height <br /> (Subtract) - (subtract) <br /> X (Multiply) OPV Length <br /> 95 Typically 95%*` "B„ U(�i/4'� Final shutoff 153/4"(400 mm) Offset <br /> volume height _ (subtract) <br /> Final shutoff volume - (subtract) Tank bottom <br /> Position and 6"(152mm) <br /> I? x 9 3 (gallons) 2'/2'(63.5 mm) mounting clearance <br /> !n� adjustment d =(equals)(equals) <br /> i <br /> 50. 125 "Y" <br /> Final Shutoff Volume Height Upper Drop Tube Length Lower Drop Tube Length <br /> I <br /> 6 <br />