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I OPW Installation , Operation , and Maintenance Manual , Page 76 Executive Order VR- 102-Q i � 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 sealant1 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 r' tube assembly with a fine half round file . ( 1 IMPORTANT : Allow sealant ( epoxy) to cure for 24 IMPORTANT : A 5/ 16" drill bit must be used . Do not hours before installing into tank . substitute any other size drill bit . nCt 7 Sealant alcund fist 5 th c id< 'i Figure 90 i `i. 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 1, three ( 3 ) clinch studs , lock evaluation . Caution : Do not over- pressure . Excess pres- washers , and nuts insure can damage the valve . holes . Do not tighten at Apply Sealant (, g �� STEP 11 : CUT LOWER TUBE AT 45 ANGLE this time . Mix up a small amount of sealant . Gen � '' - ` � ' / ! Measuring from the underside of the inlet tube flange , y apply �I,t' V it v mark the overall length of the drop tube a distance of erousl a I sealant un- � � _ derneath each clinch stud , I ' � '� } 1'` ( B ) minus 6" or as per local codes or requirements . De - li termine dimension B from the measurements taken in head , each nut , and on ti � ` h � ( ) Ste 1 , Figure 1 (Top of the Face Seal Adaptor below the the outside of the tube I around the holes . _ " _ - drain valve outlet in the spill container to the bot- tom of the tank ) . Saw off the excess tube ata 45. degree 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) . STEP 9 : TIGHTEN SELF-CLINCHING STUDS STEP 12 : PREPARE FILL RISER FOR VALVE INSER- E Tighten clinch studs securely with a Y2' wrench . Use TION only the self- clinching studs that are supplied with the IMPORTANT : Inspect the riser pipe for any foreign ma - i unit . Seating torque is 11 . 5 ftdbs 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 installs- apply and cure the sealant may result in a failure of a tion . Failure to have an unobstructed riser pipe may E' prevent proper installation or operation of the valve . pressuredecayleaktest . P P P STEP 10 : LOWER TUBE ASSEMBLY Thoroughly clean top of riser pipe . If a vise is used , clamp on the valve body casting only to avoid damage to the float . Mix the remaining sealant j until the color is uniform . Using the mixing stick , gener- i I