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0 <br /> ASSEMBLY INSTRUCTIONS <br /> Measuring Stick <br /> IMPORTANT: Each of the numbered steps in the <br /> installation instructions are designed as a CHECK <br /> LIST to ensure proper installation and trouble free <br /> operation of the OPW 71 SO Overfill Prevention <br /> Valve. <br /> Read and follow these steps carefully, checking Riser Pipe <br /> them off as you proceed. with Face (A) <br /> Seal Adaptor To Tank <br /> Figure numbers correspond to step numbers for Top(I.D.) (B) <br /> easy reference. Bottom <br /> STEP 1: MEASURE <br /> Install the OPW Face Seal Adaptor and the OPW 6-1/2" <br /> Thread-on Spill Container on the Fill Riser(Refer to <br /> the Installation Instructions Supplied with the Spill <br /> Container). Insert the 71 SO measuring stick Figure 1 <br /> through the riser pipe and hook it under the inside of <br /> the tank in the lengthwise direction. Mark the <br /> measuring stick at the top of the Face Seal Adaptor <br /> threads inside the base of the spill container bucket <br /> just below the drain valve outlet window(See Figure <br /> 1 W A). The top flange on the 71 SO will rest on the 4" <br /> NPT <br /> Face Seal Adaptor just below the drain valve outlet, Nipple <br /> and be locked in place between the Face Seal <br /> Adaptor and the 4"nipple that is installed in the spill <br /> container with the Jack Screw Kit(See Figure 1A). <br /> (For riser pipe configurations other than that shown, <br /> consult installation drawings or use other necessary o <br /> means to measure Dimension"A"). OPW Spill <br /> Container <br /> Using a tape measure, measure the distance from Jack Screw <br /> the top of the Face Seal Adaptor in the spill Mark measuring Kit <br /> container to the bottom of the tank(Dim."B"). stick here for <br /> Jack Screw ® O-Ring Seal <br /> IMPORTANT: Inspect the riser pipe for any foreign installation <br /> material. Over spray from tank relining or any (Top of Face Face Seal <br /> internal burrs inside of pipe must be removed prior Seal Adaptor) 71SO Adaptor <br /> to installation. Failure to have an unobstructed riser <br /> pipe may prevent proper installation and operation of Figure 1A <br /> the valve. The 71 SO is designed for installation into <br /> schedule 40 riser pipes. The 71 SO cannot be <br /> installed into schedule 80 riser pipes. <br /> STEP 2: MARK THE TUBE Measuring Stick <br /> Use the result from STEP 1 and HOW TO LOCATE <br /> THE POSITION OF THE 71 SO AT 95%TANK <br /> CAPACITY to mark the upper tube. Measure the <br /> distance from the seam where the upper tube and <br /> valve body meet. For"C"measurements less than Transfer Mark <br /> or equal to 6-1/2"see Figure 2. For"C° From Stick to <br /> measurements greater than 6-1/2"use a tape Upper Tube <br /> measure to mark the calculated upper tube length (Cut Line) <br /> onto the upper tube. Seam <br /> Figure 2 (For"C"less than or equal to 6-1/2"only) <br /> OPW 71 SO Overfill Prevention Valve Page 5 <br />