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OPW Installation , Operation , and Maintenance Manual , Page 76 Executive Order VR - 102 -Q STEP 7 : DRILL HOLES ously apply sealant to the first 6 male threads on the With the inlet tube in place , carefully drill ( 3 ) 1 /8 diam - valve body as shown in figure 10 . Make sure coverage eter pilot holes through the drop tube and inlet tube at is completely around the threads , and work the sealant three locations at 120 degree intervals around the tube , down into the thread profile . Quickly thread the lower 1 inch below the flange . Using the pilot holes , drill ( 3) tube onto the valve body . Tighten the tube securely by 5/ 16 " dia * holes through the tubes . Remove the burrs hand or with a strap wrench . Remove excess sealant from the drilling operation from the inside of the drop and smooth sealant bead with water moistened mixing c tube assembly with a fine half round file . ' IMPORTANT : Allow sealant ( epoxy) to cure for 24 IMPORTANT : A 5/ 16 " drill bit must be used . Do not hours before installing into tank. I substitute any other size drill bit . — _ �FC 'l5ealam „ Gwtes � i ( around lrs± 6 vue. ds �� f I (' a - - Figure 90 L it t` NOTE : Before installing the valve in the tank , a pres - Ikl, _i sure test can be performed on the valve to check for vapor tightness . Seal off both ends of the tube with Figure 7 inflatable plumber' s plugs . Apply a maximum 10" W . C . ( 1 /3 PSI ) air pressure . If pressure does not hold and a STEP 8 : ASSEMBLE AND SEAL CLINCH STUDS leak can be located with soap solution , do not install Loosely assemble the the valve . Send the valve back to OPW for warranty three ( 3) clinch studs , lock evaluation . Caution : Do not over- pressure . Excess pres- washers , and nuts in , '" sure can damage the valve . " holes . Do not tighten at Apply Sealant STEP 11 : CUT LOWER TUBE AT 46 ANGLE fJ this time . Mix up a small ' ' amount of sealant , Gen / ' ' % Measuring from the underside of the inlet tube flange , erously apply sealant un- 4, r v mark the overall length of the drop tube a distance of derneath each clinch stud . I ' �I"s ( B ) minus 6" or as per local codes or requirements . De - termine dimension B from the measurements taken in head , each nut , and on " / t rI ( ) the outside of the tube � � � ,r Step 1 , Figure 1 ( Top of the Face Seal Adaptor below the i around the holes . JY drain valve outlet in the spill container to the bot - tom of the tank ) . Saw off the excess tube at a 45- degree angle , and file off any sharp burrs ( Refer to Figure 16 ) . I Optional : Install the OPW Tank Bottom Protector on the Figure 8 lower tube ( Refer to Installation instructions supplied with the Tank Bottom Protector) . STEP 9 : TIGHTEN SELF-CLINCHING STUDS STEP 12 : PREPARE FILL RISER FOR VALVE INSER- il i Tighten clinch studs securely with a '/z' wrench . Use TION only the self-clinching studs that are supplied with the IMPORTANT : Inspect the riser pipe for any foreign ma- unit . Seating torque is 11 . 5 ft- lbs min , to 13 . 5 ft-lbs terial . Over spray from tank relining or any internal max . Do not over tighten . Note : Failure to properly burrs inside of pipe must be removed prior to installa- apply and cure the sealant may result in a failure of a tion . Failure to have an unobstructed riser pipe may pressure decay leak test. prevent proper installation or operation of the valve . c' STEP 10 : LOWER TUBE ASSEMBLY Thoroughly clean top of riser pipe . If a vise is used , clamp on the valve body casting only to I avoid damage to the float . Mix the remaining sealant ) until the color is uniform . Using the mixing stick , gener- i