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�4 We4 f <br /> Appendix A <br /> l 1 3/� = I � 0 � k • 9 � = l !? i �' 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%_ <br /> Dipstick Number on Tank Chart that corresponds to 100% volume (Y) = 1 l (Y) <br /> Dipstick Number on Tank Chart that corresponds to 50% (X) _ — NQS (X) <br /> Upper Tube Reference Number Z.M (Z) <br /> Upper Tube Depth Inside Tank C = Z-2 " <br /> - 2 <br /> Distance from top sealing surface for 71 SO Lip' to inside the 1 yd (C) <br /> top of StorageTank2 Tic +a%4 �, , 'h, rL ,- ;su ye t t ' 31r A=_ �3 <br /> wW <br /> For Non•TeMble 71 SO models only <br /> In all cases for nonAestabie 71 SO models, the top of the valve body must protrude at least 6 '/i' into the tank to <br /> provide a minimal clearance for proper operation .' 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 '/z" Yes / No <br /> If NO, Upper Tube Length (D)= C + A (� 3 f� + <br /> If YES, Upper Tube Length (D)= 61/2 "+ A <br /> Upper Tube Length = , <br /> forTestable71SO models only <br /> In all cases for Testable 71 SO models, the top of the valve body must protrude at least 6 '/2" into the tank to provide <br /> a minimal clearance for proper operation .' 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 /> If NO, Upper Tube Length ( D)= C + A - 1 1/z " <br /> If YES, Upper Tube Length (D ) = 61/2' + A - 1 1/2 " <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 manway system at the top. Make sure to use the top of the storage tank for measure- <br /> ment and not to top of the manway, Consult your underground tank manufacturer for height of the manway <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 /> 1)n <br />