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diu BB <br /> 71 SO Overfill 1/alve in Tank Shut off Level Worksheet <br /> important: 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 A►uthority,Having.Jur1sdic-. <br /> bon (AHJ)and review local,state,and national'codes to determine the regulatory requirements governing f <br /> shut-off xap�clty in your region,as well as take into account other considerations such as e)ctreme tank tilt. <br /> Take the following neasurernents'with the valve in- �. <br /> stalled in the tank: <br /> Distance from the 7150 inlet tube flange to the cast <br /> lug in the 71 SO body(see figures), upper tube length. I <br /> Note: the Upper Tube Length must be at least 16"to in- <br /> clude the protective bend in the tube, <br /> (D)= z <br /> Distance from the 71 SO inlet tube flange to the top and <br /> bottom of lower tube,valve length. (p) <br /> (W)_ 15 13/Y " Upper <br /> (U)= r /��N Tube I <br /> Distance from the 71 SO inlet tube flange to the bottom — - - - - <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 &61TP models add 0.6") (W)Valve <br /> 00 Length, 1 <br /> bottom of = <br /> From the tank calibration chart provided by tank manu- <br /> cut <br /> facturer find the dipstick number(Y)which corresponds (e) <br /> to the 100%volume. To Tank <br /> (Y}__ 140-3 <br /> (Y) <br /> 1. To determine shut-off percentage: Tank <br /> Subtract upper tube length (D)from distance to tank EU)Valve -..- Chart <br /> bottom(B) Length, 00 100% <br /> (X)_(B)—(D)-2 6 gs-)_�Ink -Z' /0� 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. --� <br /> (X)tank capacity in gallons= <br /> (Y)tank capacity in gallons= <br /> SO%_ ()0 capacity/(Y) capacity X100= 9Y. Y 3 <br /> Note: The overfill valve must be installed per AHJ require- <br /> ments and all applicable local,state,and national codes, If <br /> $ b� the overfill valve Is set above the allowable shut-off percent- <br /> X /00 Lt. y3 age the overfill valve must be removed and replaced, For <br /> 141-10.3 <br /> reference 40 CFR part 280 Subpart B Section 280,20 overfill <br /> valves should be set to a maximum of 95%, <br /> 2 <br />