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+ ? 3 UPpLA = M3fc Lcocle I4 <br /> IMPORTANT: The instructions below for the 71 SO Upper Tube Length = C + (A) <br /> Overfill Prevention Valve are written for the initial NuTf� t A ss NNxua wW <br /> stage shutoff at 95%, but can be adjusted to shutoff [Upperor testable models only, ending in "T" : <br /> at any desired tank capacity. Please contact the Au - Tube Length = C + (A ) - 1 - 1 /2" <br /> thority Having Jurisdiction (AHJ ) and review local, <br /> state, and national codes to determine the regulato - YES Upper tube length is 6- 1 /2 " plus the riser pipe <br /> ry requirements governing shut-off capacity in your measurement (A) , <br /> region, as well as take into account other considera - <br /> tions such as extreme tank tilt. In all cases, the up- Upper Tube Length = 6- 1 /2 " + (A) <br /> per tube must protrude into the tank at least 61 /2 " <br /> to ensure that the valve can shut off flow into the For testable models only, ending in "T" : <br /> tank completely before the top of the tank is wetted Upper Tube Length = 61 /2 " + ( A) - 1 - 1 /2 " <br /> consistent with EPA requirements 40 CFR 280.20 (c ) <br /> ( 1 ) ( ii ) Me NOTE : You must find the actual tank capacity num - <br /> ber that correlates to the 61 /2" + (A) depth for the <br /> HOW TO LOCATE THE POSITION OF THE 71 SO AT station records , This number may also be used for <br /> 95% TANK CAPACITY the purposes of calibrating an electronic tank level <br /> (Shut-off points can be adjusted to any capacity to system . <br /> comply with AHJ Requirements) <br /> The length of the upper tube and the placement of the Tape measure <br /> 71 SO valve body determine the shut-off point. Follow- <br /> ing the standard instructions for the OPW 71 SO will pro- <br /> vide for initial shutoff at 95 % . In all cases, the upper <br /> tube length must be a minimum of 6- 1 /2 " plus the <br /> length of the riser pipe . All length measurements are in <br /> inches . <br /> Riser Pipe <br /> INSTRUCTIONS SSC - CoOxp YA2D DxESE4. iMn7K with Face (A ) <br /> Seal Adaptor To Tank <br /> 1 ) Find tank capacity ( in gallons) fr9m tank calibration Top (I . D . ) (B ) <br /> chart provided by tank manufacturer. 14, ahG 6A L. To Tank <br /> Bottom <br /> 2) Calculate 95 % of capacity 14, "47 . 1 Gla <br /> 3 ) Locate the 95 % volume number on the tank calibra - <br /> tion chart . P -5 �/1 " Cd90 14, Z% + 4;A4 <br /> 4) Find the dipstick number (X) which corresponds to <br /> the 95 % tank volume , And, find the dipstick num- Figure 1 FEES 1 2019 <br /> ber (Y) which corresponds to the 100% volume, <br /> EXAMPLE <br /> 5 ) Subtract the dipstick number (X) from the tank di - ENVIRONMENTAL HElaa Tei <br /> ameter (Y) to find the upper tube reference number 1 ) For an Owens-Corning Model G3 Fiberglass ® Tank <br /> (Z) ' 11 r7 34 " I ° S yg 12 S�S ~ Calibration Chart: <br /> (Y) - (X) _ (Z) Tank Capacity - 10,000 gal ., nominal 9,403 gal , <br /> NOTE: Use actual capacity only <br /> 6) Subtract 2 " from (Z) to find the upper tube depth 2) 95 % of actual tank capacity 0. 95 x 9403 al . — <br /> (C) . S CE hrasg p y = gal . <br /> Z — I Va s C 8933 gal . <br /> t 1 % — ) a , I I l8 3 ) The closest number which is less than 8933 gal . Is <br /> 7) Is C less than 6 - 1 /2 " ? 8910 gal . Choosing the closest number less than <br /> 95 % of actual capacity ensures that the initial <br /> shutoff will occur when the tank is no more than <br /> NO ✓Upper tube length is C plus the distance from 95 % full . <br /> the top of the Face Seal Adaptor installed on <br /> the riser pipe to the inside, top lip of the storage 4) The calibration chart reading of 8910 gal . corre- <br /> tank (A) . sponds to a dipstick measurement of 82" . <br /> 4 <br />