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OPW Installation, Operation, and Maintenance Manual, Page 76 Executive Order VR -102-Q STEP 7: DRILL HOLES With the inlet tube in place, carefully drill (3) 1/8" diam- eter pilot holes through the drop tube and inlet tube at three locations at 120 degree intervals around the tube, 1 inch below the flange. Using the pilot holes, drill (3) 5/16" dia, holes through the tubes. Remove the burrs from the drilling operation from the inside of the drop tube assembly with a fine half round file. IMPORTANT: A 5/16" drill bit must be used. Do not substitute any other size drill bit. Figure 7 STEP 8: ASSEMBLE AND SEAL CLINCH STUDS Loosely assemble the three (3) clinch studs, lock washers, and nuts in holes. Do not tighten at this time. Mix up a small amount of sealant. Gen- erously apply sealant un- derneath each clinch stud head, each nut, and on the outside of the tube around the holes. Sur Apply Sealant T _= -'r Figure 8 STEP 9: TIGHTEN SELF -CLINCHING STUDS Tighten clinch studs securely with a Yi' wrench. Use only the self -clinching studs that are supplied with the unit. Seating torque is 11.5 ft-Ibs min. to 13.5 ft -lbs max. Do not over tighten. Note: Failure to properly apply and cure the sealant may result in a failure of a pressure decay leak test. STEP 10: LOWER TUBE ASSEMBLY If a vise is used, clamp on the valve body casting only to avoid damage to the float. Mix the remaining sealant until the color is uniform. Using the mixing stick, gener- ously apply sealant to the first 6 male threads on the valve body as shown in figure 10. Make sure coverage is completely around the threads, and work the sealant down into the thread profile. Quickly thread the lower tube onto the valve body. Tighten the tube securely by hand or with a strap wrench. Remove excess sealant and smooth sealant bead with water moistened mixing IMPORTANT: Allow sealant (epoxy) to cure for 24 hours before installing into tank. _ npp;y Sealy, asn'Giete+y a tvid NS! 611Fe3d5 Figure 70 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 inflatable plumber's plugs. Apply a maximum 10" W.C. (1I3 PSI) air pressure. If pressure does not hold and a leak can be located with soap solution, do not install the valve. Send the valve back to OPW for warranty evaluation. Caution: Do not over -pressure. Excess pres- e can damage the valve. ST ter dra EP 11: CUT LOWER TUBE AT 45 ANGLE Measuring from the underside of the inlet tube flange, mark the overall length of the drop tube a distance of (B) minus 6" or as per local codes or requirements. De - mine dimension (B) from the measurements taken in Step 1, Figure 1 (Top of the Face Seal Adaptor below the in 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). Optional: Install the OPW Tank Bottom Protector on the lower tube (Refer to Installation instructions supplied with the Tank Bottom Protector). STEP 12: PREPARE FILL RISER FOR VALVE INSER- TION IMPORTANT: Inspect the riser pipe for any foreign ma- terial. Over spray from tank relining or any internal burrs inside of pipe must be removed prior to installa- tion. Failure to have an unobstructed riser pipe may prevent proper installation or operation of the valve. Thoroughly clean top of riser pipe.