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/y` 7 io1 I Appendix B 6141 z.I S 1 7150 Overfill Valve in Tank Shut off Level Worksheet Important: This is meant to be supplemental worksheet and not a substitute to following the installation manual instructions, All length measurements are in inches. Please contact the Authority Having Jurisdic- tion (AHJ)and review local,state,and national codes to determine the regulatory requirements governing shut-off capacity in your region,as well as-take into account other considerations such as extreme tank tilt. Take the following measurements with tie valve in i stalled in the tank. - �- Distance from the 71 SO inlet tube flange to the cast lug in the 71 SO body(see figures),upper tube length. Note: the Upper Tube Length must be at least 16"to in- elude the protective bend in the tube. ,r (D)_ 41- _ If 3 E Vii_ Distance from the 71 SO inlet tube flange to the top and �`� bottom of lower tube,valve length. I (W)_ I IS (D) Upper (U)= I Z�' L+'�' Tube Distance from the 71 SO inlet tube flange to the bottom of the tank. Note:If a tank bottom protector is present it may be necessary to add this thickness to dimension I (OPW 6111 &61 TP models add 0.6") (W)Valve (B)= 137- -..- Length, 1 bottom of From the tank calibration chart provided by tank manu� ! y cut facturer find the dipstick number(Y)which corresponds = to the 100%volume. ! (8) (Y)=- st-__ r'-` To Tank 4 (Y) 1. To determine shut-off percentage: Tank Subtract upper tube length (D)frorn distance to tank (U)Valvet Chart bottom (B) r� Length, 100% ` (X)=(B)-(D)-2"= l l_ a -_--------- top of cut 3 Volume ---- -._ -- Dipstick Using the tank calibration chart provided by the tank d "� manufacturer determine the tank capacity at the 00/ volume O tank cal- culated Y i culated(X)dimension and the 1 capacity. -I (X)tank capacity in gallons= ��5�> 7' (Y)tank capacity in gallon;:- q06;' 30 L k 50%_(X)capacity t(Y)capacity x1 a ��'� ��'� `-- Note: The overfill valve must be installed per AM require- ments and ail applicable local,state,and national codes. If the overfill valve is set above the allowable shut-off percent- age_the;overfill valve must be removed and replaced. t or reference 40 CFR part 280 Subpart B Section 280.20 overfill valves should be set to a maximum of 95%. 1?