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2d V- R . <br /> HOW TO LOCATE THE POSITION OF THE <br /> 71SO AT 95%TANK CAPACITY Measuring Stick <br /> The length of the upper tube and the placement of I <br /> the 71 SO valve body determine the shut-off point. <br /> Fallowing the standard instructions for the OPW <br /> 71 SO will provide for initial shutoff at 95%. In all 'f ? <br /> cases,the upper tube length must be a minimum of <br /> 6-1/2"plus the length of the riser pipe. All length <br /> measurements are in inches. Riser Pipe <br /> INSTRUCTIONS with Face (A) <br /> Seal Adaptor To Tank <br /> Top(I.D.) (B) <br /> 1.)Find tank capacity(in gallons)from tank To Tank <br /> calibration chart provided by tank manufacturer. Bottom <br /> t 9,70 3 <br /> ,717 <br /> 2.)Calculate 95%of capacity. /9' <br /> 6-112" <br /> 3.)Locate the 95%volume number on the tank <br /> calibration chart. jvr _Y it <br /> Figure 1 <br /> 4.) Find the dipstick number(X)which corresponds <br /> to the 95%tank volume. And, find the dipstick <br /> number(Y)which corresponds to the q ' ' EXAMPLE <br /> 100%volume. 117- /0 t'—/DS-7� 1.)For an Owens-Coming Model G-3 Fiberglass(& <br /> 5.)Subtract the dipstick number(X)from the tank Tank Calibration Chart:Tank Capacity-10,000 gal.,nominal 9,403 gal. <br /> diameter(Y)to rind the upper tube reference NOTE: Use actual capacity only <br /> number(Z). 1, <br /> tYl,-(X)_(Z)., f Z_ 2.)95% of actual tank capacity=0.95 x <br /> 9403 gal.=8933 gal. <br /> 6.) Subtract 2"trum(1)to find the upper tube depth <br /> (C}. (Z)-2"=C /Q — 3[ r' 3.)The closest number which is less than 8933 gal. <br /> // Is 8910 gal.Choosing the closest number less <br /> than 95%of actual capacity ensures that the <br /> 7.) Is C less than fi-112"? /�jv initial shutoff will occur when the tank Is no more <br /> NO Upper tube length is C plus the distance than 95%full. <br /> from the top of the Face Seal Adaptor 4.)The calibration chart reading of 8910 gal. <br /> installed on the riser pipe to the inside,top corresponds to a dipstick measurement of 82". <br /> lip of the storage (A). <br /> Upper Tube Length= C+(A) 5.) Dipstick number(X)=82" <br /> Tank diameter(Y)= 92" <br /> (Y)-(X)=(Z) (92"-82"= 10") <br /> YES Upper tube length is 6-1/2"plus the riser (Z)= 10" <br /> pipe measurement(A). <br /> - = - = <br /> Upper Tube Length=6-112"+ (A) 7.) (Z) 2" C (10" 2" 8")C =8" <br /> NOTE: You must find the actual tank capacity 7.)Is 8"less than 6-1/2"? <br /> number that correlates to the 6-112"+(A)depth <br /> for the station records. This number may also NO Measure the distance from the top of the <br /> be used for the purposes of calibrating an FSA-400 Face Seal Adaptor installed on the <br /> electronic tank level system, riser pipe to the inside,top lip of the storage <br /> tank and obtain measurement(A). <br /> E Registered T.M.-Owens Coming Fiberglass Corporation <br /> Upper tube length= C+(A) <br /> 64 <br />