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. , VV // a: Appendix C HOW TO LOCATE THE POSITION OF THE 71 SO FOR COMPLETE SHUT-OFF AT A GIVEN TANK CAOW,iT"I Note : This Appendix only applies when AHJ require- EXAMPLE I i i ) (' ) I r\i _ HEAD H ments call for complete shut-off at a given tank capacity. 1 . For an Owens Corning Model 'G- Yiber w5 o0vi�ri , ',) ' See page 4 for standard measurements. a, s ; <, 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 pie calculation below will provide for complete shut-off at 95% . In all cases, the upper tube length must be a Tape meas minimum of 6- 1 /2" plus the length of the riser pipe. All length measurements are in inches . INSTRUCTIONS 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. ' seat Adaptor To Tank Top (I . D. ) 8 3 . Locate the 95 % volume number on the tank calibra- To Taut; tion chart. , _ " Bottom 4. Find the dipstick number (X) which corresponds to the 95 % tank volume. And, find the dipstick number (Y) which corresponds to the 100% volume 5 . Subtract the dipstick number (X) from the tank diam - eter (Y) to find the upper tube reference number (Z) . (Y) - (X) _ (Z) 95 % of actual tank capacity = 0.95 x 9403 gal . _ 8933 gal . 6 . Add 1 . 511 to (Z) to find the upper tube depth E. (Z) + 1 .5 " = E rLL'V - / 3 . The closest number which is less than 8933 gal. Is 7. Is E less than 6- 1 /2" ? r�V'� 8910 gal. Choosing the closest number less than 95 % of actual capacity ensures that complete NO Upper tube length is E plus the distance f m the shutoff will occur when the tank is no more than top of the Face Seal Adaptor installed the riser 95 % full . IN .pipe to the inside, top lip of the stor e tank (A). Upper Tube Length = E + (A) 4. The calibration chart reading of 8910 gal , corre- J sponds to a dipstick measurement of 82". VVr Far testable models only/eding in "T": S . Dipstick number (X) = 82" er Tube Length = E + 1 - 1 /2" Tank diameter (Y) = 92 " (Y) - (X) _ (Z) (92 "- 82" = 1011) W10 YES Upper tube length isZ1142" plus the riser pipe measurement (A) . 6 . (Z) + 1 .5 " = E ( 10" + 105 Upper Tube Length = 61111 /2 + (A) 7 . Is 11 .5 " less than 6- 1 /2"? EUprp testable models only, ending in "T" : NO Measure the distance from the top of the FSA-400 er Tube Length = 6 - 112" + (A) — 1 - 1 /2 ' Face Seal Adaptor installed on the riser pipe to the inside, top lip of the storage tank and obtain measurement (A) . NOTE: You must find the actual tank capacity num - Upper tube length = E + (A) ber that correlates to the 6 - 1 /2" + (A) depth for the station records . This numoer may also be used or For testable models only, ending in "T": the purposes of calibrating an electronic tank level Upper Tube Length = E + (A) — 1 - 1 /2 " systems. 23