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OPW Installation , Operation , and Maintenance Manual , Page 74 Executive Order VR- 102-Q ®Registered T. M. Owens Corning Fiberglass Corporation ASSEMBLY INSTRUCTIONS Tape measure IMPORTANT : Each of the numbered steps in the instal - �i .f lation instructions are designed as a CHECK LIST to en - sure proper installation and trouble free operation of the OPW61 SO Overfill Prevention Valve . F= Read and follow these steps carefully , checking them off as you proceed . Riser Pipe Figure numbers correspond to step numbers for easy r; with ( ) To Tank ( ) reference . Face peal Adaptor Top To ti ( I . ) Tank STEP 1 : MEASURE Botom Install theOPWFace SealAdaptorandthe OPWThread - on Spill Container on the Fill Riser ( Refer to the Installa - tion Instructions Supplied with the Spill Container) . In - ri serf a tape measure through the riser pipe and hook it under the inside of the tank in the lengthwise direction . EXAMPLEH. Measure the distance from the top of the Face Seal 1 ) For an Owens-Corning Model G3 Fiberglass@ Tank Adaptor threads inside the base of the spill container Calibration Chart : bucket just below the drain valve outlet window to the Tank Capacity 10 , 000 gal . , nominal 9 , 403 gal . inside , top lip of the storage tank ( Dim . " A" ) NOTE : Use actual capacity only ( See Figure 1 & 1A) . 2) 95 % of actual tank capacity = 0 . 95 x 9403 gal . = The top flange on the 61 SO will rest on the Face Seal114 8933 gal . Adaptor just below the drain valve outlet , and be locked 3 ) The closest numberwhich is less than 8933 gal . Is in place between the Face Seal Adaptor and the 4" 8910 gal . Choosingthe closest number less than nipple that is installed in the spill container with the E 95 % of actual capacity ensures that the initial Jack Screw Kit ( See Figure 1 A) . ( For riser pipe configu - shutoff will occur when the tank is no more than rations other than that shown , consult installation 95 % full , drawings or use other necessary means to measure Di - 4 ) The calibration chart reading of 8910 galcorre- mension "A" ) . Ej sponds to a dipstick measurement of 82 " , Using a tape measure , measure the distance from the top 5 ) Dipstick number ( X ) = 82" of the Face Seal Adaptor in the spill container to the Tank diameter (Y ) = 92" bottom of the tank ( Dim . "B ") (Y ) - ( X} _ (Z) ( 92 " - 2 " = 10 " ) IMPORTANT : Inspect the riser pipe for any foreign ma- (Z) = 10 teri al . Over spray from tank relining or any internal burrs 6 ) (Z) 2 " = C ( 10" - 2" = 8") inside of pipe must be removed prior to installation . 1 C = 8" Failure to have an unobstructed riser pipe may prevent proper installation and operation of the valve . The 61 SO 7 ) Is 8" less than 6- 112"? is designed for installation into schedule 40 riser pipes . j The 61 SO cannot be installed into schedule 80 riser NO Measure the distance from the top of the FSA- pipes . €; 400 Face Seal Adaptor installed on the riser pipe STEP 2 : MARKTHETUBE to the inside , top lip of the storage tank and Use the result from Step 1 and HOW TO LOCATE THE obtain measurement (A) . POSITION OFTHE 61 SO AT 95% TANK CAPACITYto j — mark the upper tube . Measure the distance from the Upper tube length C + (A} point where the upper tube and valve body meet . For " C " measurements greater than 6- 1 /2 " use tape measure to mark the calculated upper tube length onto the upper tube . j I i i I�