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r LL <br /> ck"r-' <br /> 1 yyz j z <br /> Appendix B <br /> 7150 Overfill Valve in Tank Shut off Level Worksheet N <br /> supplemental worksheet and not a substitute to following the installation to <br /> Important This is meant to be supp � <br /> manual instructions.All length measurements are in inches.Please contact the Authority Having Jurisdic- 00 <br /> tion(AHJ)and review local,state,and national codes to determine the regulatory requirements governing O <br /> shut-off capacity in your region,as well as take into account other considerations such as extreme tank tilt. to <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 7150 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 /> (0)= D� <br /> Distance from the 71 SO inlet tube flange to the top and <br /> bottom of lower tube,valve length. (D) <br /> (W)= V✓^ Upper <br /> (U)=PA _ Tube <br /> Distance from the 71 SO inlet tube flange to the bottom <br /> of tate tank Note:If a tank bottom protector is present it <br /> may be necessary to add this thickness to dimension <br /> (OPW 6111&61TP models add 0.6") (W)Valve <br /> &E <br /> fG Length, t <br /> bottom of <br /> f <br /> From the tank calibration chart provided by tank manu- cut <br /> 1 <br /> facturer find the dipstick number(1)which corresponds <br /> t0 the 1099b vOluTe.�/0 ToTank <br /> 1. To determine shut-off percentage: Tank <br /> Subtract upper tube length(D)from distance to tank (U)valve Chart <br /> bottom(B) Length, 100%Vol- <br /> (X)=(B)—(D)-2"= �US S top of cut umeDip- <br /> stick <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. 1 <br /> (X)tank capacity In gallons= <br /> rt <br /> �2Y � Mh <br /> (Y)tank capacity in gallons= M <br /> 50%=(X)capacity/(Y)capacity x100= <br /> Note: The overfill valve must be installed per AHI require- <br /> ments and all applicable local,state,and national codes. It 0 <br /> the overfill valve is set above the allowable shut-off percent- 0 <br /> age the overfill valve must be removed and replaced. For o <br /> reference 40 CFR part 280 Subpart B Section 280.20 overfill O <br /> valves should be set to a maximum of 95 Ln <br /> Ln <br /> W <br /> 20 µ <br /> N <br /> 00 <br />