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i <br /> Si94ioe1l -Lo DI, CA <br /> glow gallm 4&ik -pr Zi <br /> flx- <br /> yn(ea <br /> Determine drop tube lengths <br /> Defender Spill Contain ent(Ref.) <br /> Seat surface of upper drop tube <br /> 0 <br /> ..X.. <br /> ,rX„ Top of Tank <br /> Upper Drop Tube <br /> -- �— Final Shutoff Volume" <br /> Overfill Prevention Valve <br /> "A„ <br /> (U.S.T.) <br /> Lower <br /> "B" <br /> Drop Tube <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 /> Actual Tank Capacity To find Upper Drop Tube length"X" To find Lower Drop Tube length"Y" <br /> IbotDrop tube seat s �� Final shutoff <br /> q�I Gallons A 58 18 tto B rj �8 volume height <br /> bottomom or tank <br /> X (Multiply) - <br /> Subtract - subtract <br /> OPV Length <br /> 95 Typically 95%** "B" I S Sri Final shutoff 15%"(400 mm) offset <br /> n volume height <br /> - (subtract) - (subtract) <br /> q"5-0(0 Final shutoff volume Position and 6"(152mm) Tank bottom <br /> (gallons) 2%i'(63.5 mm) mounting clearance <br /> =(equals) adjustment =(equals) <br /> 115 51s = B nXe 4o.35 n "Y" 9 3.845,, <br /> Final Shutoff Volume Height Upper Drop TubeLenglh Lower Drop Tube Length <br /> 6 <br />