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The tube is indented enough when the shoulder of the roller Completing the Installation <br /> tool contacts the tube and creates a witness line/mark Before you begin assembly, clear the inside diameter <br /> of the tank riser pipe of any burrs, improper reaming, or <br /> foreign material. Failure to adequately clean the inside of <br /> the tank riser pipe may damage or prevent the valve from <br /> functioning properly. <br /> Note: The upper and lower threads of the valve come <br /> pre-lubricated from the factory. DO NOT USE PIPE <br /> SEALANT. <br /> 1. Thread the upper and lower drop tubes onto the <br /> Overfill Prevention Valve and tighten using strap <br /> Witness Lines wrenches (DO NOT USE PIPE WRENCHES). <br /> 4M Position one on the upper drop tube, and the other <br /> on the lower drop tube (see Figure 11). DO NOT <br /> TIGHTEN ON THE FLOAT SHIELD OR VALVE. <br /> 2. Check the float and flapper mechanism by rotating <br /> k I the outer coupler(counter-clockwise). This should <br /> Figure 8:First Indent activate the internal flapper and operate smoothly. <br /> 8. Repeat steps 6 & 7 for the second mark (Figure 10) <br /> i <br /> i � <br /> .l rWitness Lines <br /> Outer Coupler <br /> Il, <br /> Figure 10: Outer Coupler, Lowered and Raised <br /> 3. Double-check to see that the drop tube gasket was <br /> installed under the upper drop tube flange (dual <br /> W point installation, Figure 7). <br /> 4. Before inserting drop tube into the riser pipe, <br /> disipate any staic buildup by grounding to earth. <br /> ` 5. Carefully lower the completed assembly down the <br /> Figure 9:Second Indent riser pipe (DO NOT DROP). Do not force the valve <br /> down the riser pipe. If the valve does not fit, the riser <br /> pipe may have to be cleaned or deburred further. <br /> Wrench Area Wrench Area <br /> IV <br /> DO NOT WRENCH <br /> Figure 11:Do Not Tighten on the Float Shield <br /> 7 <br />