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5055 <br /> Appendix A <br /> 71 SO Overfill Valve Upper Tube Calculation Worksheet <br /> Important, This is meant to be supplemental worksheet and not a substitute to following the installation <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%= Q S <br /> Dipstick Number on Tank Chart that corresponds to 100% volume (Y) = i t s/ (y) <br /> Dipstick Number on Tank Chart that corresponds to SO% (X) _ -' / 0 yS/JF (X) <br /> Upper Tube Reference NumberZ=Y-X 1 13 `/8 (Z) <br /> -- 2 <br /> Upper Tube Depth Inside Tank C = Z-2" <br /> I Distance from top sealing surface for 71 SO LIpp ' to inside the <br /> top of Storage Tank2 6a'tFo at - VAT +0 +o f of Autw S ca.( a Y tv- 16q A= 5 f %y <br /> h-a,"h � �, �.► � / 00 % d , � s*. c � vet✓ .4..c !— t- "— <br /> For Nonmjestable 7150 modgls only <br /> In all cases for non-testable 71 SO models, the top of the valve body must protrude at least 6 l/z" into the tank to <br /> provide a minimal clearance for proper operation 3 Additionally the total Upper Tube Length must be at least 16" <br /> of length to include the protective bend in the tube . <br /> Is C less than 6 1/2" Yes / Do <br /> 3 ti <br /> If NO, Upper Tube Length (D)= C + A I 1 �/� ♦ � � '/Y ,. 6 Z �� <br /> If YES, Upper Tube Length (D)= 61/2 "+ A <br /> M <br /> Upper Tube Length = Z 3l8 <br /> For Testable 71 SO models only <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 operations Additionally the total Upper Tube Length must beat least 141/x" of <br /> length to include the protective bend in the tube, <br /> Is C less than 5" Yes / No a , <br /> If NO, Upper Tube Length (D)= C + A — 1 1/2 <br /> If YES, Upper Tube Length (D) = 61/2" + A - 1 1/z AiENVIrolN" <br /> Upper Tube Length = ; <br /> ' Sealing surface maybe the top of the Face 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 /> 2 Some Underground Storage tanks utilize a manwaysystem at the top. Make sure to use the top of the storage tank for measure- <br /> mentandnottotopofthemanway. Consult your underground tank manufacturer for height of the monway <br /> 3 This measurement is taken from the seam where the upper tube Is attached to the valve body to the inside of the tank top. <br /> �n <br />