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r- <br /> I <br /> Determine drop tube lengths <br /> Defender Spill Containment[Ref.] <br /> Seat surface of upper drop tubi: 17 <br /> ✓ J_ r <br /> v <br /> „x„ Top of Tank <br /> Upper Drop Tube <br /> Final Shutoff Volume" <br /> Overfill Prevention Valve <br /> "A„ <br /> (U.S.T.) <br /> Lower „B„ <br /> Drop Tube <br /> sly$$ <br /> f <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" f152mm) <br /> Calculate final shutoff volume <br /> To find Upper Drop Tube length"X" To find Lower Drop Tulse length"Y" <br /> Actual Tank Capacity Drop tube seal <br /> PBP Final shulotf <br /> f 7 Gallons A' 1�-'7 surface to wvolume height <br /> `1 bottom of tank <br /> X (Multiply) - (Subtract) - (subtract) OPV <br /> �' Final shuloff 15'/"(400 mm) Offset Length <br /> 95 Typically 95°I,"* "B" j Q ��]� volume height <br /> - (subtract} - [subtract] <br /> Final shutoff volume Position and 6" (152mm} Tank bottom <br /> (gallons) 2'/z' {63.5 <br /> mm mounting clearance <br /> adjustrr en! <br /> _ (equals) =(equals) <br /> 175.75 B "K. q <br /> u.�xw DmD Tube L"In lower prop Tubo L"Up <br /> Final Shutoff Volume Height <br />