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Tank ID: 91 <br /> Appendix B <br /> 71 SO Overfill Valve in Tank Shut off Level 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(AM)and review local,state,and national codes to determine the regulatory requirements governing <br /> shut-off capacity in your region,as wallas take into account other considerations such as extreme tank tilt. <br /> Take the following measurements with the valve in- <br /> stalled in the tank: <br /> Distance from the 71SO inlet tube flange to the cast <br /> lug in the 71 SO body(see figures),upper tube length. <br /> Note: the Upper Tube Length must be at least 16"to <br /> include the protective bend in the tube. <br /> (o)=44 <br /> Distance from the 71 SO inlet tube flange to the top and <br /> bottorn of lower tube,valve length.121 (D) <br /> 121 - Upper <br /> (U)= Tube <br /> Distance from the 7150 inlet tube flange to the bottom <br /> of the tank. Note.If a tank bottom protector is present it <br /> may be necessary to add this thickness to dimension <br /> (OPVV 61611&61TP models add 0.6'°) M Valve <br /> (B)= Length, <br /> bottom of <br /> From the tank calibration chart provided by tank manu- cut <br /> facturerfind the dipstick number(Y)which corresponds <br /> to the 100%volume. (B) <br /> (Y)= 92 To Tank <br /> (Y) <br /> 1. To determine shut-off percentage: Tank <br /> Subtract upper tube length(0)from distance to tank (u)valve Chart <br /> bottom(B) 80 Length, 100%Vol- <br /> M=(B)—M-2"=� top of cut umeDip- <br /> stick <br /> Using the tank calibration chart provided by tha tank <br /> manufacturer determine the tank capacity at the cal- <br /> culated(X)dimension and the 100%volume(Y)tank <br /> capacity. <br /> (X)tank capacity In gallons= 10930 <br /> {Y)tank capacity In gallons= 11682 <br /> 5096=(X)capacity!(Y)capacityxIGO= 93.5 <br /> Note: The overfill valve must he installed perAtiJ require- <br /> ments and all applicable local,state,and national codes. if <br /> the overfill valve is set above the allowable shut-off percent- <br /> age the overfill valve must be removed and replayed. For <br /> reference 40 CFR part284 Subpart B Section 290.20 overfill <br /> valves should be set to a maximum of 93%. <br /> 20 <br />