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. i <br /> Appendix 6 <br /> 7150 Overfill Valve in Tank Shut off level Worksheet <br /> Im ant: 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"to in- <br /> clude the Lie;;%bend in the tube. <br /> (D)_ } <br /> Distance from the 71 SO inlet tube Flange to the top and . <br /> bottom of lower tube,valve length. <br /> (W)_ &- 53l/ IU <br /> (U)_ G Z r/ Uppeti Tuber <br /> Distance from the 7150 inlet tube flange to the bottom <br /> of the tank. Note:If a tank bottom protector ff present i — — <br /> may be necessary to add this thickness to dimension <br /> (OPW 6111 &61TP models add 0.6") (W)Valve <br /> S�J Length, <br /> bottom of <br /> From the tank calibration chart provided by tank manu- cut <br /> facturer find the dipstick number(Y)which corresponds <br /> to the 100%volume. (i3) <br /> (Y)= To Tank <br /> 1. To determine shut-off percentage: (Y) <br /> Tank <br /> Subtract upper tube length(D)from distance to tank (U)Valve Chart <br /> bottom(B) I Length, 100% <br /> (X)=(B)-(D)-2"= U/. 5_ _ j L� top of cut Volume <br /> 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. i <br /> (X)tank capacity in gallons= �v 2 v <br /> (Y)tank capacity in gallons= r L 3 <br /> SO%=(X)capacity I(Y)capacity x100= C/ � 4 <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 260 Subpart B Section 280.20 overfill <br /> valves should be set to a maximum of 95%. <br /> 21 <br />