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t2 Sl�_ HOW TO LOCATE THE POSITION OF THE 71 SO AT 95%TANK CAPACITY Measuring Stick The length of the upper tube and the placement of the 71 SO valve body determine the shut-off point. Fallowing the standard instructions for the OPW 71 SO will provide for initial shutoff at 95%. In all cases,the upper tube length must be a minimum of r 6-1/2"plus the length of the riser pipe. All length measurements are in inches. Riser Pipe i fi with Face (A) INSTRUCTIONS Seal Adaptor To Tank (8) XO,'t.S-i 1.)Find tank capacity(in gallons)from tank Top(LD.) To Tank calibration chart provided by tank manufacturer. I, Bottom C o (1yl 2.)Calculate 95%0#capacity. ---�----- --- ^� ' -- 6-1/2" �Ob ,17 3)Locate the 95%volume number on the tank calibration Figure 1 4.)Find the dipstick number(X)which corresponds to the 95% tank volume. And, find the dipstick (Yu' number(Y)which corresponds to the EXAMPLE 100%volume. 1.) For an Owens-Coming Model G-3 FiberglassV Tank Calibration Chart: 5.)Subtract the dipstick number(X)from the tank Tank Capacity- 10,000 gat., nominal 9,403 gal. diameter(Y)to find the upper tube reference NOTE: Use actual capacity only �( t number(Z). .. (Y)- (X)_ (Z) 2.)95% of actual tank capacity=0.95 x 9403 gal. =8933 gal. 6.)Subtract 2 from(Z)to find the upper tube depth (C). 3.)The closest number which is less than 8933 gal. (Z)-2"=C Is 8910 gal. Choosing the closest number less than 95% of actual capacity ensures that the 7.)Is C less than 6-1/2"? initial shutoff will occur when the tank is no more .-� NO Upper tube length is C plus the distance than 95%full. from the top of the Face Seal Adaptor 4.)The calibration chart reading of 8910 gal. installed on the riser pipe to the inside, top corresponds to a dipstick measurement of 82". lip of the storage(A). 5.) Dipstick number(X)=82" Upper Tube Length =C + (A) Tank diameter(Y)= 92" (Y)-(X)= (Z) (92 "-82"= 10") YES Upper tube length is 6-112"plus the riser (Z)= 10" pipe measurement (A). 7.) (Z)-2"=C (10"-2"= 8") Upper Tube Length =6-1/2"+(A) C=8" NOTE: You must find the actual tank capacity 7.) Is 8"less than 6-1/2"? number that correlates to the 6-1/2" + (A) depth for the station records. This number may also NO Measure the distance from the top of the be used for the purposes of calibrating an FSA-400 Face Seal Adaptor installed on the electronic tank level system. riser pipe to the inside, top lip of the storage tank and obtain measurement(A). rJ Registered T.M.-Owens Corning Fiberglass Corporation Upper tube length = C+(A) 64