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0 <br /> w1Cktyr 0__1 z <br /> Appendix B N <br /> w <br /> 71 SO overfill Valve in Tank Shut off Level Worksheet 4� <br /> Important,This is meant to be supplemental worksheet and not a substitute to following the installation W <br /> w <br /> manual instructions.All length measurements are in inches.Please contact the Authority Having Jurisdic- CD <br /> tion(AHJ)and review local,state,and national codes to determine the regulatory requirements governing W <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"to <br /> include the protective bend in the tube. <br /> (D)= G <br /> Distance from the 71 SO inlet tube flange to the top and <br /> bottom of lower tube,valve length. (D) <br /> (M= ANA Upper <br /> (U)= M, 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 <br /> I <br /> D may be necessary to add this thickness to dimension (W)valve <br /> 7 (OPW 6111&61 TP models add 0.6") <br /> CDLength, <br /> :3 (B)_ — bottom of <br /> Q cut <br /> X From the tank calibration chart provided by tank manu- <br /> iT facturer find the dipstick number(Y)which corresponds (B) <br /> to the 1 vokpne. G L r! To Tank <br /> to= ��`U� <br /> (Y) <br /> 1. To determine shut-off percentage: Tank <br /> Subtract upper tube length(D)from distance to tank (U)valve Chart <br /> Vol- <br /> bottom(B) Length, 100%Vol- i <br /> / 5— <br /> top of cut ume Dip- <br /> (X)=(B)—(D) 2"= l stick <br /> 7 <br /> Using the tank calibration chart provided by the tank I ) <br /> manufacturer determine the tank capacity at the cal- <br /> culated(X)dimension and the 100%volume(Y)tank I a <br /> capacity. l d <br /> (X)tank capacity in gallons <br /> (Y)tank capacity in gallons <br /> rt <br /> SO%=(X)capacity!(Y)capac1tyx100Note:The overfill valve must be installed per AW require- (D <br /> merits and all applicable local,state,and national codes.If <br /> the overfill valve Is set above the allowable shut-off percent- n <br /> age the overfill valve must be removed and replaced.For 0 <br /> reference 40 CFR part 280 Subpart B Section 280.20 overfill (7 <br /> valves should be set to a maximum of 95%. O <br /> O <br /> 20 O <br /> 11 <br /> Ln <br /> W <br /> Lrl <br /> r. 00 <br />