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Determine drop tube lengths <br /> Defender Spill Contain int{Ret) <br /> 7 <br /> Seat surface of upper drop lube <br /> X I,X„ Top of Tank <br /> t Upper Drop Tube l f <br /> ti I <br /> or-- Final Shuloff Volume" <br /> Overfill Prevention Valve <br /> "All <br /> (U-S T} <br /> Lower <br /> Drop Tube <br /> :l <br /> j <br /> "Y11 <br /> 6" (152 mm) Max' <br /> Bottom of Tank NO a State <br /> If local codes require this distance to be smaller <br /> subtract less than 6"(152mm1 <br /> Calculate final shutoff volume <br /> Actual tank Capacity To find Upper Drop Tube length"X" To find Lower Drop Tube length"Y" <br /> ® Gallons "A" .+ ) C'?n U S'C S n F na11 Sh 1!011 <br /> "l Z/ Z 5:da e t "B" -7:1//-2— v aumc hc4ghL <br /> hata� f � 1. <br /> X (Multiply) - (Subtract) - (subtract) <br /> F .0 ,- 15''x-(400mm) OPV <br /> , a,h <br /> 95 Typically 95'u" •'a,- Z n <br /> — - (subtr - (sublracl� <br /> Final shutoff volume act] P Sio0. C 6"{152mm) rl��°eco m <br /> (gallons) 21,"(63 5 mm) to^y <br /> = (equals) r = (equalsf <br /> 3ta B "X" Z+fZ "Y" ��3/LI <br /> Final Shuloff Volume Height <br /> 6 <br />