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Appendix BB <br /> 71 SO 0verfi11 Valve in Wank 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 Iength measurements are in inches. Please contact the Autharity Having Jurisdic- <br /> tion (AHJ)and review local,state,and national codes to determine the regulatory requirements governing <br /> shtit-off capacity in your region,as well as take into account other considerations such as extreme tank tilt. <br /> Take the fo Howl ng measurements with the valve in- <br /> staller!in the tank: r <br /> Distance from the 7150 inlet tube flange to the cast <br /> lug in the 7150 body(see figures),upper tube length, <br /> Note: the tipper Tube Length must be at least 16"to in- <br /> clude the protective bend in the tube. <br /> E7istarlrPfrom the 71 SO inlet tube flange to the top and <br /> botto+Alovv T�be,VniYc 1E.,gtl1. Qf <br /> [W}= J <br /> (1j) ,_JXr- Upper <br /> Tube <br /> Distance from the 71 SO inlet tube flange to the bottom ` j <br /> of the tank. mote:if a tank bottom protector is present it ' r� <br /> may be necessary to add this thickness to dimension <br /> (DPW 6111 &61TP models add 0.5N) {Vd}valve 1 <br /> Length, F <br /> bottom of <br /> From the tank calibration chart provided by tank mane- cut <br /> facturer Find the dipstick number M which corresponds 't <br /> to the 1 GM/o voI ume, (B) <br /> (Y) To Tank <br /> tYl � <br /> 1. To determine shut-off percentage: Tank <br /> Subtract upper tube length(D)from distance to tank (0)Valve _ Chart ` <br /> bottom(8) Length, lfl4°Ia I <br /> tx)=(8)—(D)-a"= PQ3. 3 5 top of cut Volume 11 <br /> Dipstick <br /> Using the tank calibration chart provided by the tank <br /> manufacturer determine the tank capacity at the cal- <br /> culated M dimension and the 1001%volume (Y)tank <br /> capacity. <br /> I 7 <br /> (K)tank capacity in gallons= <br /> (Y)tank capacity in gallons= 1 <br /> 1 <br /> 4 <br /> 50%={}C) capacity I(Y)capacity x100 <br /> Hate: The overfill valve must be installed perAH1 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 Q Section 280.20 overfill <br /> valves should be set to a maximum of 95%. <br /> 21 <br />