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Appendix A <br />0 5L 71 SO Overfill Valve Upper Tube Calculation Worksheet <br />Important: This 1s 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 cosies 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; Soo/.= CjS <br />Dipstick Number (Y) on Tank Chart that corresponds to 100% volume = 1 � 2S (Y) <br />Dipstick Number on Tanis Chart that corresponds to SO% (X) _ -' i � w <br />Upper Tube Reference Number Z=Y-X (Z) <br />Upper Tube Depth Inside Tank C = Z-2" <br />Distance from top sealing surface for 71 SO Lip' to inside the <br />top of Storage Tan k2 A <br />For Non -Testable 7150 models oni <br />In all cases for non -testable 71 SO models, the top of the valve body must protrude at least 6 1/2" into the tank to <br />provide a minimal clearance for proper operation.3 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 6'/2" Yes 1 No <br />If NO, Upper Tube Length (D)= C -+- A <br />If YES, Upper Tube Length (D)= 6'/z "+ A <br />Upper Tube Length= <br />For Testable 7150 models oni <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.3 Additionally the total Upper Tube Length must beat least 14 1/2" of <br />length to include the protective bend in the tube. <br />Is C less than 6 112" Yes / No <br />If NO, Upper Tube Length (D)- C + A -- 1 1/2 " <br />If YES, Upper Tube Length (D) = 6 1/2" + A — 1 1/2 " <br />Upper Tube Length = <br />' Sealing surface may be 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 />Some Underground Storage tanks utilize a man way system at the top. Make sure to use the top of the storage rank for measure - <br />merit and not to top of the manway, Consult your underground tank manufacturer for height of the man way <br />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 />0A <br />