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OPW Installation, Operation, and Maintenance Manual, Page 56 Executive Order VR-102-I STEP 20: PREPARE FILL RISER FOR VALVE STEP 23: CHECK INSTALLATION INSERTION Insert the drop tube all the way into the tank until the flange and gasket seat onto the top of the Face Seal IMPORTANT:Inspect the riser pipe for any foreign Adaptor. The float will swing out into the operating material. Over spray from tank relining or any position as it passes into the tank. internal burrs inside of pipe must be removed prior to installation. Failure to have an unobstructed riser pipe may prevent proper installation or operation of the valve. Thoroughly clean top of riser pipe. _` STEP 21: REMOVE ELASTIC BAND Remove the elastic band securing the float to the valve body. The float will move into an outward \ position. STEP 22: INSERT DROP TUBE Make sure the upper O-Ring gasket is under the flange of the inlet tube. Hold the float down against the valve body and slowly insert the drop tube overfill valve into the riser pipe. Do not force valve into the riser pipe. If any obstruction or foreign matter interferes with smooth insertion of the valve, the riser pipe must be , cleared. ` WARNING �r Failure to follow the assembly and installation instructions Figure 23 or use of excessive force to insert the OPW Make sure that the float is aligned along the length 71SO will VOID THE of the tank. The length of the tank can easily be WARRANTY± determined by locating other manholes or pump boxes that are installed around other tank fittings. Look into the drop tube and align the deflector with the length of the tank. \ CAUTION:No obstruction in the tank can be within 14"from the center of the riser pipe or the valve may not operate properly(See Figure 24). Figure 22 Difficulty in removing the existing fill tube(if there is STEP 24: ALIGN VALVE one)means there may be an obstruction in the riser Install the OPW Jack Screw Kit and a 4"NPT nipple pipe. Look for burrs, deformations, excess tank to lock the valve in place. Refer to the Installation lining material or other projections that may interfere Instructions supplied with the Jack Screw Kit. Instal! with easy insertion of the OPW 71 SO. The 71SO is the Rotatable Product Adaptor(Refer to Installation designed for insertion into schedule 40 pipe. If Instructions supplied with the Product Adaptor.) schedule 80 pipe has been used for the riser,the Make sure that the valve does not rotate while 71SO cannot be installed. If seamed pipe has been tightening the adaptor by observing the position of used,the internal weld bead may interfere with the the deflector. The valve must remain aligned OPW 71 SO and prevent installation. If the OPW along the length of the tank as in Step 23. 71SO won't slip in easily DON'T FORCE IT! Repeat this step as necessary to assure proper Damage to the valve may result if excess force is valve alignment. used. Examine the riser pipe carefully;determine the nature of the obstruction;take appropriate steps to remove it. OPW 71 SO Overfill Prevention Valve Page 10