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A�gr��iix <br /> 71 SO Overfill Valve in Tank Shut off Level Worksheet <br /> I This is meant to be supplemental worksheet and not a substitute to following the installation <br /> man al Instructions„ All length measurements are in Inches, Please contact the Authority Laving Jurlsfii, <br /> tion,(AH�)and review local,state,and national*c'odes to determine the regulatory requirements governing <br /> rhul-off cap�5ti y in your region,as well as take into account other considerations such as extreme tank tilt, <br /> 1 ako the folliowing Vu16sUrements with the valve in- [, <br /> stalled in the tank: ..a ��--...•.._. <br /> DIstonce from the 7150 Inlet tube flange to the cast <br /> lug in the 71 SO body(see figures),upper tube length, I <br /> Notp; the Upper Tube Length must be at least 16"to In.. <br /> clue the protective bend In the tube. <br /> (D) g z- . <br /> Distance from the 71 SO inlet tube flange to the top and <br /> bottom of lower tube,valve length, D <br /> (W)= r--E �8 4 Upper <br /> (U)�= L$r-._ Tube <br /> Dlstan4e,frglm the 71 SO Inlet tube flange to the bottom _- -- -----•- •-- --.-. <br /> of! e•tarik, 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)Val4e <br /> )i=�_�.b Qo Length, <br /> (13 <br /> bottom of <br /> From the tank calibration chart provided by tank mann- 00 cut <br /> faQturer find the dipstick number(Y)which corresponds 0% <br /> toithe 100%volume. (B) <br /> (Y)= 2.5 y 31 - 118 -74 To Tank <br /> (Y) <br /> 1.: To determine shut-off percentage: Tank <br /> Subtract upper tube length (D)from distance to tank (U)Valve Chart <br /> =o ( ) Length, 100% <br /> (g)-(0)-2"- [863�y2- Cg Z)-2-= /D 2y top of cut Volume <br /> Dipstick <br /> U�Ing the tank cailibration chart provided by the tank <br /> njanufacturer determine the tank capricity at the cal- <br /> 11ated(X)dimension and the 100%volume(Y)tank <br /> c pacity, <br /> (�()tank capacity in gallons= Z-3539 <br /> (N)tank capacity in gallons= Z 5 `�3 <br /> 40%=()0 capacity/(-Y) capacity x100= <br /> Note: The overfill valve must be Installed per AHJ require- <br /> 23539 <br /> equlre- <br /> 2353 Xments and all applicable local,state,and national codes. If <br /> /0 0 9 2 the overfill valve Is set above the allowable shut-off percent- <br /> S Y 31 age the overfill valve must be removed and replaced, For <br /> reference 40 CFR part 280 Subpart 6 Section 280,20 overfill <br /> valves should be set to a maximum of 95%, <br /> 21 <br />