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Eo � 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 1 S measurements are in inches. Riser Pipe INSTRUCTIONSwith Face (A) Seal Adaptor To Tank Top (ID.} {B} . 1.) Find tank capacity (in gallons)from tank To Tank calibration chart provided by tank manufacturer. Bottom Iaj 257 2.) Calculate 95%of capacity. q 7 yy 60 6-1/2" 3.) Locate the 95% volume numb r on the tank calibration chart. 1 OG r, °r 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 S EXAMPLE 100%volume. /V(-b �'� /(9^ 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). 2 (Y)- {X)= (Z) 3 y 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). / �y 1/ 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-i/2"? /Y 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). Upper Tube Length -C + A 5.) Dipstick number(X)= 82" U pp g - ( ) Tank diameter(Y)= 92" (Y)-(X) =(Z) (92 "-82" = 10") YES Upper tube length is 6-1/2" plus the riser (Z)= 10" pipe measurement (A). 7.) (Z)-2"= C (10" -2"= 8") Upper Tube Length=6-1/2"+ (A) C _ 81, NOTE: You must find the actual tank capacity 7.) Is 8" fess 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). Q Registered T.M.-Owens Coming F berglass Corporation Upper tube length= C + (A) 64