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7R;l <br /> Appendix C(continued) <br /> 7150 Overfill Valve in Tank Complete 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(AHJ)and review local,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 /> Distance from the 71 SO 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 t in r <br /> clude the protective bend in the tube <br /> Distance from the 71 SO inlet tube flange to the top and _ <br /> bottom of lower tube,valve length. <br /> (W)= <br /> (U)_ �� ir 1— Upper <br /> Tube <br /> Distance from the 71 SO inlet tube flange to the bottom <br /> of the tank. Note:If a tank bottom protector is present it j <br /> may be necessary to add this thickness to d mension / <br /> (OPW 61 1111 &61 TP models add 0.6") (W)Valve <br /> (B)_ a <br /> Length, <br /> � <br /> From the tank calibration chart provided by tank manu- bottomof cut <br /> facturer find the dipstick number (Y)which corresponds <br /> to the 100%v lume. (B) <br /> (Y)_ S�� To Tank <br /> 1. To determine complete shut-off percentage: an <br /> Subtract upper tube length(D)from distance to tank —� Tank <br /> PP 9 (U)Valve Chart <br /> bottom(B) Length, t 100 <br /> (X)_(B)-(D)+i.5"_ 'u top of Volume <br /> f j Dipstick <br /> Using the tank calibration chart provided by the 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= <br /> (Y)tank capacity in gallons _-_- <br /> Complete 50%_(X)capacity!(Y)capacity x100= <br /> Note: The overfill valve must be installed per AHJ re- <br /> quirements and all applicable local,state,and national <br /> codes. If the overfill valve is set above the allowable <br /> shut-off percentage the overfill valve must be removed <br /> and replaced. <br /> Note: This Appendix only applies to valves installed per Appendix C. See Appendix B for the standard valve <br /> installation tank shut off level worksheet. <br /> 24 <br />