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Z.(! 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. Following 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 6-1/2" plus the length of the riser pipe. All length measurements are in inches. Riser Pipe INSTRUCTIONSwith Face (A) Seal Adaptor To Tank )D (I. . (B) 1.)Find tank capacity(in gallons)from tank Top To Tank calibration chartprovided by tank manufacturer. Bottom !1, o? 2.)Calculate 95% of capacity. 11,ZW 3 6-1/2" 3.)Locate the 95% volume number on the tank calibration chart. 16r— %l/ t 4.) Find the dipstick number(X)which corresponds Figure 1 to the 95% tank volume. And, find the dipstick number(Y)which correspo � to the / A EXAMPLE loo%volume. 11C�_ _ 106_s8 _ 1.) For an Owens-Corning Model G-3 Fiberglass® Tank Calibration Chart: 5.) Subtract the dipstick number(X)from the tank Tank Capacity- 10,000 gal., nominal 9,403 gal. diameter(Y)to find the upper tube reference NOTE: Use actual capacity only number(Z). /, (Y)- (X) = (Z) !3 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) Z " 11 /I 3.)The closest number which is less than 8933 gal. /3 ( )-2 = C Is 8910 gal. Choosing the closest number less than 95% of actual capacity ensures that the 7.) Is C less than 6-112"? Nv 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" YES Upper tube length is 6-1/2" plus the riser (Y)-(X)= (Z} (92 "-82" = 10") (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). m Registered T.M.-Owens Coming Fiberglass Corporation Upper tube length = C + (A) 64