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-T ; `l ) base_ �k <br /> Appendix f3 <br /> 71 SO Overfill Valve in Tank Initial Shut off Level Worksheet <br /> Important: This is meant to be supplemental worksheet and not a substitute to following the installation <br /> manual instructio is. All length measurements are in inches. Please contact the Authority Having Jurisdic- <br /> tion (AFIJ)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 last J <br /> lug in the 71 SO body(see figures),upper tube length. <br /> G 5 <br /> Note: the Upper TL be Length must be at least 16"to in- <br /> clude the protective bend in the tube. <br /> I <br /> Distance from the 71 SO inlet tube flange to the top and , <br /> bottom of lower tube,valve length. J` <br /> (W)_ ) �(o1/ 91 (D) <br /> (U)- g Upper <br /> Tube <br /> i <br /> Distance from the 71 SO inlet tube flange to the bottom ----.- -----J-- =�. ..---.- - -t <br /> of the tank. Note: If a tank bottom protector is present it <br /> may be necessary to add this thickness to dimension <br /> (OPW 6111 &61 TP inodels add 0.6") N (W)Valve <br /> (B)_ `1 Vy Length, <br /> bottom of; <br /> From the tank calib ation chart provided by tank manu- �� cut <br /> facturer find the dipstick number(Y)which corresponds I ', <br /> to the 100%volume. (B) <br /> (Y)= It 970 To Tank <br /> V (Y) <br /> 1. To determine but-off percentage: Tank ! <br /> Subtract upper tube length (D)from distance to tank (U)Valve Chart !I <br /> bottom (B) Length, I 100% f? <br /> (X)=(13)—(D) -2" I ,) 2�� —Z=I Q.� /y top of cut 4l Volume it <br /> 12 6 S J f Dipstick <br /> Using the tank cal bration chart provided by the tank <br /> manufacturer det rmine the tank capacity at the cal- I� <br /> culated (X)dimension and the 100%volume(Y)tank ;1 <br /> capacity. <br /> (X)tank capacity in gallons= t <br /> (Y)tank capacity in gallons- --- — ---- <br /> SO%=(X)capacit /(Y)capacity x100= tq Y-43 <br /> Note: The overfill valve must be installed per AHJ require- <br /> ments and all applicable local,state,and national codes. If <br /> n U' 3 the overfill valve is set above the allowable shut-off percent- <br /> I 0 x `� l age the overfill valve must be removed and replaced. For <br /> reference 40 CFR part 280 Subpart B Section 280.20 overfill <br /> valves should be set to a maximum of 95%. <br /> 21 <br />