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Determine trop tube lengths <br /> Defender Spill Contain eni(Re() <br /> Seat surface of upper drop tube <br /> t <br /> X X Top of Tank <br /> r Upper Drop Tube I <br /> r <br /> t r Final Shutoff Volume" <br /> Overfill Prevention Valve/ <br /> U-S-T) <br /> Lower <br /> Drop Tube <br /> „Y„ <br /> I <br /> i <br /> 6" (152 mm) Max" <br /> Bottom of Tank Nei 17 S;SR <br /> ' It local codes require this distance to be smaller <br /> subtract less than 6" f 152mmt <br /> Calculate final shutoff volume <br /> Actual Tank Capacity To find Upper Drop Tube length"X" To find Lower Drop Tube length"Y" <br /> " G4dn a 13 s al Fear Sh rtag <br /> 6 3 Gallons ,.A..( f, l�L 5u—IN iI 8.. „ <br /> L+ hc.ltan�al rinF. v._lumc height <br /> X (Multiply) - (Subtract) - (subtract) <br /> OPV Len3,h <br /> .95 Typically 95'+s" "B" 7' Fmil;hu,:df 151,'(400 mm) Off SPI <br /> ,�ILm,hcoghr <br /> Final shutoff volume - (subtract) - (subtract) <br /> q P-,5and 6"(152mm) Tank CCltpm <br /> (gallons) 2'z"(63 5 rnm) maunFnr, jOarance <br /> �d,usi ren) <br /> (equals) =(equals) <br /> 3�g - B "X„ .% i� Y.. S tf� <br /> Final Shutoff Volume Height f.J dCl h'f.7"�cr 1r.11, <br />