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Appendix A 7150 Overfill Valve Upper Tube Calculation Worksheet Important: This is meant to be supplemental worksheet and not a substitute to following the installation manual instructions. All length measurements are in inches. Please contact the Authority Having Jurisdic- tion (AHJ) and review local, state, and national codes to determine the regulatory requirements governing shut-off capacity In your region, as well as take into account other considerations such as extreme tilt. tank Desired tank capacity for shut-off: so%= j-� Dipstick Number on Tank Chart that corresponds to 100% volume (Y) _ ,/ (Y) — Dipstick Number on Tank Chart that corresponds to SO% (X) = ii (X) Upper Tube Reference Number Z=Y-X L1 (Z) Upper Tube Depth Inside Tank C = Z-2" 2 (C) Distance from top sealing surface for 71 SO Lip' to inside the Storage Tank' A=_, top of For Non-Testable 71 SO models only 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 provide a minimal clearance for proper operation.3 Additionally the total Upper Tube Length most beat least 16" of length to include the protective bend in the tube. . Is C less than 61,/2" Yes /j No If NO, Upper Tube Length (D)= C + A _ r 81 If YES, Upper Tube Length (D)= 61/2 "+ A 4r, Upper Tube Length =�/ _ m For Testable 71 SO models only In all cases for Testable 7150 models, the top of the valve body must protrude at least 6'/z" into the tank to provide z o 3 minimal clearance for proper operation.' Additionally the total Upper Tube Length must beat least 141/2" of l ength to include the protective bend in the tube., � m � s C less than 5" Yes / No rA NO, Upper Tube Length (D)= C + A -1 1/2 " m (D) = 612"+A-1 '/z " D YES, Upper Tube Length Upper Tube Length , = 4