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Appendix A <br /> 71 SO Overfill Valve Upper Tube Calculation Worksheet <br /> Im r • This is meant to be supplemental worksheet and not a substitute to following theinstallation <br /> manual instructions. All length measurements are in inches. Please contact the Authority Having Jurisdic- <br /> tion (AHJ) and review local, state, and national codes to determine the regulatory requirements governing <br /> shut-off capacity in your region, as well as take into account other considerations such as extreme tank tilt, <br /> Desired tank capacity for shut-off; SO%= 9 <br /> Dipstick Number on Tank Chart that corresponds to 100% volume (Y) = 118 ctG 7/0 (Y) <br /> Dipstick Number on Tank Chart that corresponds to So% (X) = t t 8 ct cl X , G r - I i 25 �+ ' — ,Qt (X) <br /> UpperTube' Reference Num berZ=Y-X 11Z 71 (Z) <br /> Upper Tube Depth Inside Tank C = Z-2" 2 <br /> Distance from top sealing surface for 71 SO Lip ' to inside the e (C) <br /> top of Storage Tank2 A- 6 2 VY <br /> For Non Testable 71 SO mow ls II <br /> In all cases for =Agstable 71 SO models, the top of the valve body must protrude at least 6 '/z" into the tank to <br /> provide a minimal clearance for proper operation ? Additionally the total Upper Tube Length must beat least 16" <br /> of length to include the protective bend In the tube . <br /> Is C less than 61/2" Yes / No <br /> if NO, Upper Tube Length ( D)= C + A <br /> If YES, Upper Tube Length (D)- 61/2 "+ A <br /> Upper Tube Length <br /> For Testable 71 SO models oniv <br /> In all cases for Testable 71 SO models, the top of the valve body must protrude at least 61/2" into the tank to provide <br /> a minimal clearance for proper operation.3 Additionally the total Upper Tube Length must beat least 141/2" of <br /> length to include the protective bend in the tube. <br /> Is C less than S" Yes / No <br /> RECE .' Vr <br /> If NO, Upper Tube Length ( D)= C + A — 1 1/2 <br /> If YES, Upper Tube Length (D) = 61/2" + A - 1 1/2 " <br /> • <br /> Upper Tube Len ' ENVIRONMENTAL HEAL I H <br /> th = DEPART g €HEPAR , 4ENIT <br /> ' Sealing surface maybe the top of the pace Seal Adaptor, the built In sealing ledge inside some spill containers, or on non-vapor <br /> tight applications the top of the pipe nipple <br /> a Some Underground Storage tanks utilize a monwaysystem at the top. Make sure to use the top of the storage tank for measure- <br /> ment and not to top of the mcinway. Consult your underground tank manufacturer for height of the manway <br /> ' This measuremeht Is taken from the seam where the upper tube is attached tothe valve body to the inside of the tank top. <br /> 20 <br />