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Contents Note: Determine if the underground storage tanks is <br /> equipped with a ball float vent valve. If the tank is <br /> Important Safety Messages.................................2 equipped with a ball float vent-valve, the nipple <br /> portion must not extend more than 3" (76.2 mm) <br /> Introduction...........................................................3 into the tank for this device to function properly. <br /> Determining Drop Tube Length...........................4 To prevent product spillage from an <br /> Marking and Cutting the Tubes...........................5 Caution 1 underground storage tank (UST), <br /> well-maintained delivery equipment, <br /> Completing the Installation .................................7 a proper connection, and a tight <br /> Maintenance..........................................................8 fill adaptor are essential. Delivery <br /> Overfill Prevention Valve Inspection ..................8 personnel should inspect delivery <br /> elbows and hoses for damage and <br /> Inspecting/Verifying ............................................9 missing parts. <br /> Dimension Drawing............................................10 <br /> Specifications.....................................................10 <br /> Installation Record Sheet.................................. 11 <br /> Introduction <br /> FFS's model 708-590 Series Overfill Prevention Valve <br /> should only be installed in a spill container through a 4" <br /> (102 mm) schedule 40 tank riser. The valve is designed <br /> with a primary shutoff that will activate between 85 and <br /> 92% of tank volume, depending upon tank size.After the <br /> primary shut-off is actuated the flow through the valve is <br /> limited to less than 8 gpm. A secondary, positive shutoff will <br /> occur at 95% tank volume if filling continues. After primary <br /> shutoff occurs, the delivery hose may still be drained by <br /> using extreme caution, and taking these steps: <br /> • Close the truck bottom loading valve. Wait 5 minutes <br /> • Crack open the coupler between the delivery hose <br /> and the bottom loading valve, to allow the hose to <br /> drain slowly. <br /> Note: Shutoff points are influenced by the specific <br /> gravity of stored liquids. These instructions are <br /> based on average performance using all products. <br /> This valve was designed to be used as an <br /> emergency overfill prevention device only! <br /> Tools <br /> Installation and Assembil <br /> Tape Measure (1) Valve Assembly <br /> Half Round File (1) Installation Manual <br /> Permanent Marker (1) Gasket—Upper Drop Tube(4") <br /> •FFS Pipe Cutter (1) Hose Clamp <br /> •Groove Roller Tool (1) Warning Plate <br /> * Refer to the Product Catalog for ordering information. <br /> 3 <br />