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Tank ID 87 <br /> Appendix B <br /> 71SO Overfill Valve in Tank Shut off Level Worksheet <br /> Important: This is meantto be supplemental worksheet and not a substitute tofollowing the Installation <br /> manual instructions. All length measurements are in inches. Please contact the Authority Having Jurlsdlc- <br /> tion(AHA and review focal,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 /> Take the following measurements with the valve in- <br /> stalled in the tank: <br /> instance from the 7150 inlet tube flame to the cast <br /> lug in the 71SO body(so*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 /> 58.25 <br /> Distance from the 71SO inlet tube flange to the top and <br /> bottom of lower tube,valve length.160 (p) <br /> ( ) 158.5 Upper <br /> (U)— Tube <br /> Distance from the 71SO inlet tube flange to the bottom <br /> of the tank. Note,If a tank bottom protector is present it <br /> may be necessaryto add this thickness to dimension <br /> (OPW 6111&61TP models add 0.6'`) (W)Valve <br /> 3 <br /> (g)__ 5Length, <br /> bottom of <br /> From the tank calibration chart provided by tank mane- cut <br /> factu rer f rid the dipstick number(Y)which corresponds <br /> to the 100%volume. (g) <br /> 118.375 To Tank <br /> (w)D�p- <br /> stick 1. To determine shut-off percentage: Ta <br /> Subtract upper tube length(D)from distance to tank (U)valve Ch <br /> bottom(B) Length, 1011%(](}=JB)—(D)-2-=10325 topof cut <br /> ume <br /> Using thetankcalibratlonchart provided bythetank <br /> manufacturer determine the tank capacity at the cal- <br /> culated(1[)dimension and the 100%volume(Y)tank <br /> capacity. <br /> (X)tank capacity In gallons= 18400 <br /> {Y}tank capacity In gallons� 19782 <br /> 50%=(X)capacity!(Yl capacityx100= 93 <br /> Note: The overfill valve must be installed per AHJ 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 replaced. For <br /> reference 40 CFR part 280 Subpart B Section 280.20 overfill <br /> valves should be set to a maximum of 95%. <br /> �0 <br />