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cl` HOW TO LOCATE THE POSITION OF THE 71SO 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. Following the standard instructions for the OPW 71SO will provide for initial shutoff at 95%. In all cases, the upper tube length must be a minimum of I Tk 6-1/2"plus the length of the riser pipe. All length - measurements are in inches. Riser Pipe t with Face (A) INSTRUCTIONS Seal Adaptor I To Tank (S) h 1 Top(I.D.) To Tank 1.)Find tank capacity(in gallons)from tank I; ��'�3 calibration chart provided by tank manufacturer. I ' Bottom it-1 8.-1 2.j Calculate 95%of capacity. -�- 6-1/2" 3.)Locate the 95%volume number on the tank calibration chart. kC6 31q 4.) Find the dipstick number(X)which corresponds Figure 1 to the 95%tank volume. And,find the dipstick number(Y)which corresponds to the EXAMPLE 1 100%volume. 1.)For an Owens-Corning Model G-3 FiberglassO Tank Calibration Chart: 5.)Subtract the dipstick number(X)from the tank Tank Capacity- 10,000 gal., nominal 9,403 gal. = IZ• S diameter(Y)to find the upper tube reference NOTE: Use actual capacity only number(Z). (Y)-(X) _(Z) 2.)95%of actual tank capacity= 0.95 x 6.)Subtract 2"from(Z)to find the upper tube depth 9403 gal. =8933 gal. (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 than 95%full. NO Upper tube length is C plus the distance 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 6-1/2" plus the riser (Z)= 10" r � � pipe measurement(A). Upper Tube Length=6-112"+ (A) C=84, 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 Seat Adaptor installed on the electronic tank level system. riser pipe to the inside,top lip of the storage tank and obtain measurement(A). Registered T.M -Owens Corning Fiberglass Corporation Upper tube length=C+ (A) 64