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Appendix C HOW TO LOCATE THE POSITION OF THE 71 SO FOR COMPLETE SHUT- OFF AT A GIVEN TANK CAPACITY Note: This Appendix only applies when AHJ require- EXAMPLE ments call for complete shut-off at a given tank capacity. 1 . For an Owens-Corning Model G-3 Fiberglass° Tank See page 4 for standard measurements. Calibration Chart: The length of the upper tube and the placement of the Tank Capacity - 10, 000 gal ., nominal 9,403 gal . 71 SO valve body determine the shut-off point. The sam - NOTE : Use actual capacity only ple calculation below will provide for complete shut-off at 95 % . In all cases, the upper tube length must be a Tape measure minimum of 6- 1 /2 " plus the length of the riser pipe. All length measurements are in inches . �1 F� INSTRUCTIONS o 1 . Find the tank capacity ( in gallons) from the tank cali - bration chart provided by the tank manufacturer. Riser Pipe with Face A 2 . Calculate 95 % of capacity. Z:11 ,279 , Seal Adaptor I To Tank 3 . Locate the 95 % volume number on the tank calibra- Top (l • D, ) To (Tank } _ Bottom tion chartX 1 G— LV 4. Find the dipstick number (X) which corresponds to Af the 95 % tank volume. And, find the dipstick number (Y) which corresponds to the 100% volume. � �� r' t.�✓ MAY7 i I) l `) 5 . Subtract the dipstick number (X) from the tank diam - eter (Y) to find the upper tube reference number (Z) . (Y) - (X) = (Z) Z m ) 3 2 . 95 % of actual tank capadNVlF0kJMW$TAL HEALTH 6. Add 1 .5" to (Z) to find the upper tube depth E. tt 8933 gal . DEPARTMFNIT' (Z) + 1 . 5 " = E 13 ..i I S.- L� , 3 . The closest 7 . Is E less than 6 - 1 /2 "7 � / t1 , � 7 8910 gal . Cr 95 % of actu NO Upper Upper tube length is E plus the distance from the shutoff will / 1 q ---- top of the Face Seal Adaptor installed on the riser 95 % full . _ pipe to the inside, top lip of the storage tank (A) . 4. The calibrat Upper Tube Length = E + (A) A Ql , o * � f _ sponds to a _ For testable models only, ending in "T": �f 5 . Dipstick nur I I L ,)%%� — o (� b 2 Upper Tube Length = E + (A) - 1 - 1 /2" Tank diamet j( (Y) - (x) _ (Z) YES Upper tube length is 6- 1 /2 " plus the riser pipe Q 10 measurement (A) . 6 . (Z) + 1 .5 " = E 1 . Upper Tube Length = 6- 1 /2 " + (A) E = 11 .5 " _ ( � 7 . Is 11 . 5 " less 1 f a �/ f `` For testable models only, ending in "T" : NO Measure tl Upper Tube Length = 6 - 1 /211 + (A) — 1 -1 /2" Face Seal I the inside, C� measurem NOTE : You must find the actual tank capacity num- Upper tub ber that correlates to the 6" 1 /2" + (A) depth for the station records . This number may also be used or For testa6 the purposes of calibrating an electronic tank level Upper Tut system .