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5) Dipstick number(X)=82" top of the Face Seal Adaptor in the spill container to the Tank diameter(Y)=92" bottom of the tank(Dim."B"), (Y)-(X)=(Z) (92"-2"= 10") IMPORTANT:Inspect the riser pipe for any foreign mate- (Z)= ION rial. Over spray from tank relining or any internal burrs 6) (Z)-2"=C 0o"-Z=8") inside of pipe must be removed prior to installation. C=8" Failure to have an unobstructed riser pipe may prevent 7) Is 8"less than 6-112"? proper installation and operation of the valve. The 71 SO is designed for installation into schedule 44 riser pipes. The 71 SO cannot be installed into schedule 80 NO Measure the distance from the top of the FSA- riser pipes. 400 Face Seal Adaptor installed on the riser pipe to the inside,top lip of the storage tank and ob- STEP 2: MARK THE TUBE tain measurement(A). Use the result from Step 1 and HOW TO LOCATE THE POSITION OF THE 7 TSO AT 95%TANK CAPACI'T'Y to Upper tube length=C+(A) mark the upper tube. Measure the distance from the seam where the upper tube and valve body meet. Use For testable models only,eroding in"T": Upper Tube a tape measure to mark the calculated upper tube Length=C+(A)- 1-112" length onto the upper tube. See Figure 2. ASSEMBLY INSTRUCTIONS Tape measure IMPORTANT: Each of the numbered steps in the in- stallation instructions are designed as a CHECK LISTto ensure proper Installation and trouble free operation of the OPW 71 SO Overfill Prevention Valve. Read and follow these steps carefully,checking them Riser Pipe off as you proceed. with Face (A) Seal Adaptor To Tank B Figure numbers correspond to step numbers for easy Top(I.D.) ToTank reference. Bo orn STEP 1: MEASURE Install the OPW Face Seal Adaptor and the OPW Thread- on Spill Container on the Fill Riser(Refer to the installa- tion Instructions Supplied with the Spill Container). In- Figure I sert a tape measure through the riser pipe and hook it under the inside of the tank in the lengthwise direction. Measure the distance from the top of the Face Seal Adaptor threads inside the base of the spill container bucket just below the drain valve outlet window to the 4e NPT. inside,top lip of the storage tank(Dim."A")(See Figure Nippy 1 &1A). The top flange on the 71 SO will rest on the Face Seal Adaptor just below the drain valve outlet,and be locked in place between the Face Seal Adaptor and the ° OP1N Spill 4"nipple that is installed in the spill container with the Container Jack Screw Kit(See Figure 1A). (For riser pipe configura- Jack Screw tions other than that shown,consult installation draw- Measure to he Kit ings or use other necessary means to measure pimen- for J ac Screw installation O-Ring Seal sion"A"). (Top of Face soar Adapto) Faoe Seal Using a tape measure,measure the distance from the 71So Adaptor Figure 1A 5