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20 � - HOW TO LOCATE THE POSITION OF THE 71SO AT 95%TANK CAPACITY Measuring Stick The length of the upper tube and the placement of l 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 f measurements are in inches. Riser Pipe INSTRUCTIONS with Face {A) Seal Ada or To Tank (B) 1.) Find tank capacity(in gallons)from tank Y Top(I.D.) To Tank calibration chart provided by tank manufacturer. Bottom 2.) Calculate 95%of capacity. g 9153. 6-1/2" 3.) Locate the 95% volume number on the tank calibration chart. 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 4 EXAMPLE 100%volume. 1,97_//, �� 1.) For an Owens-Coming Model G-3 Fiberglass® �f 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)7 ,ice /Z�� 2.) 95% of actual tank capacity=0.95 x l 9403 gal.= 8933 gal. 6.) Subtract 2"ficim ( )to find the upper tube epth (C)• 3.)The closest number which is less than 8933 gal. (Z) -2"= C /4—Y Is 8910 gal. Choosing the closest number less than 95%of actual capacity ensures that the 7.) Is C less than 6-112"? N D initial shutoff will occur when the tank is no more than 95%full. NO Upper tube length is C plus t distance from the top of the Face Se Adaptor 4.)The calibration chart reading of 8910 gal. installed on the riser pipe t the inside, top corresponds to a dipstick measurement of 82". lip of the storage (A). Upper Tube Length— + A 5•) Dipstick number(X)= 82" U PP g — ( ) Tank diameter(Y)= 92" (Y)-(X) =(Z) (92"-82" = 10") YES Upper tube length i 6-1/2"plus the riser (Z)= 10" pipe measureme (A). Upper Tube L 7.) (Z)-2"= C (10"-2"=8") PR gth =6-112"+ (A) C = 8" NOTE: You st 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). Registered T.M.-Owens Coming Fiberglass Corporation Upper tube length =C + (A) 64