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OPW Installation , Operation , and Maintenance Manual , Page 76 Executive Order VR - 1024 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 3 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 l f , 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 t from the drilling operation from the inside of the drop and smooth sealant bead with water moistened mixing tube assembly with a fine half round file . Stink IMPORTANT : Allow sealant (epoxy) to cure for 24 IMPORTANT : A 5/ 16 " drill bit must be used . Do not hours before installing into tank . rj fl substitute any other size drill bit . -- rs ,. A{.{: l Sealant f ,7 GS tefY � ? around first 5 th cads fj r4 Figure 10 PA NOTE : Before installing the valve in the tank , a pres- 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 . ( 1l3 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 Araai;� Sealant I ; a STEP 11 : CUT LOWER TUBE AT 45 ANGLE this time . Mix up a small J` i Measuringfrom the underside of the inlet tube flange , amount of sealant. Gen- /� � 1 J erously apply sealant un- r'If v/ Y mark the overall length of the drop tube a distance of derneath each clinch stud X1, 1 fall ' ( B ) minus 6" or as per local codes or requirements . De - . head , each nut, and on > termine dimension ( B ) from the measurements taken in / Step 1 , Figure 1 (Top of the Face Seal Adaptor below the the outside of the tube drain valve outlet in the spill container to the bot- tom `± around the holes . - of the tank ) . Saw off the excess tube at a 45- degree 11 angle , and file off any sharp burrs ( Refer to Figure 16 ) . Optional : Install the OPW Tank Bottom Protector on the Figure 8 lower tube ( Refer to Installation instructions supplied with the Tank Bottom Protector) , Hi STEP 9 : TIGHTEN SELF -CLINCHING STUDS STEP 12 : PREPARE FILL RISER FOR VALVE INSER- Tighten clinch studs securely with a ' " wrench . Use TION /2 only the self- clinching studs that are supplied with the IMPORTANT : Inspect the riser pipe for any foreign ma - 3 . 5 ftdbs terial . Over spray from tank relining or any internal unit . Seating torque is 11 . 5 ftdbs min . to 1 I burrs inside of pipe must be removed prior to installa- max . Do not over tighten . Note : Failure to propeNA rly P P 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 . STEP 10 : LOWER TUBE ASSEMBLY Thoroughly clean top of riser pipe . If a vise is used , clamp on the valve body casting only to t avoid damage to the float . Mix the remaining sealant until the color is uniform . Using the mixing stick , gener- I 4 E