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J.1 ' U^� Y1 cJ: Site: Appendix B Date: 7/"/Z' • 71 SO Overfill Valve in Tank Shut off Level Worksheet Tank ID Tester DW 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 tank tilt. Take the following measurements with the valve in- stalled in the tank: Distance from the 71 SO inlet tube flange to the cast lug in the 71 SO body (see figures), upper tube length. Note: the Upper Tube Length must be at least 16" to in- clude the protective bend in the tube. (D) _ � I Distance from the 71 SO inlet tube flange to the top and bottom of lower tube, valve length. (W)=1'-� 1:1/5 (U) = 1 vh 1 i,4 Distance from the 71 SO inlet tube flange to the bottom of the tank. Note: If a tank bottom protector is present it may be necessary to add this thickness to dimension (OPW 6111 & 61 TP models add 0.6") • (B) =130 . 171— From the tank calibration chart provided by tank manu- facturer find the dipstick number (Y) which corresponds to the 100% volume. (Y) = r — i 1. To determine shut-off percentage: Subtract upper tube length (D) from distance to tank bottom (B) k � (X) _ (B) - (D) - 2" _ I g I Using the tank calibration chart provided by the tank manufacturer determine the tank capacity at the cal- culated (X) dimension and the 100% volume (Y) tank capacity. (X) tank capacity in gallons =�J J / (Y) tank capacity in gallons =� 0033 1% (/ 1-1- SO% _ (X) capacity / (Y) capacity x100 fit • Note: The overfill valve must be installed per AHJ'require- ments and all applicable local, state, and national codes. If the overfill valve is set above the allowable shut-off percent- age the overfill valve must be removed and replaced. For reference 40 CFR part 280 Subpart B Section 280.20 overfill valves should be set to a maximum of 95%. 21 (D) Upper Tube i (W) Valve Length, bottom of �i cut (B) To Tank M Tank (U) Valve Chart Length,100% top of cut Volume Dipstick 1� Note: The overfill valve must be installed per AHJ'require- ments and all applicable local, state, and national codes. If the overfill valve is set above the allowable shut-off percent- age the overfill valve must be removed and replaced. For reference 40 CFR part 280 Subpart B Section 280.20 overfill valves should be set to a maximum of 95%. 21