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OPW Installation, Operation, and Maintenance Manual, Page 48 Executive Order VR-1 02-1 GENERAL INSTRUCTIONS The OPW 71 SO Overfill Prevention Valve is Normal Operation:A Hose"Kick"and reduced flow designed for tight fill, gravity drop applications to signal that the tank is full. Close transport delivery help prevent accidental or intentional overfilling of valve and drain hose into tank before disconnecting underground storage tanks. It is installed in the UST any hose fitting. drop tube in place of a standard drop tube. The main 71SO valve closes when liquid level is at Overfilled Tank:Failure of the hose to drain after 95%of the top of the tank. A small bypass valve closing the delivery valve signals an overfilled tank. remains open to allow the delivery hose to drain at Do Not Disconnect any delivery hose fitting until the 3-5 gallons per minute. If the delivery truck valve is liquid level in the tank has been lowered to allow the not closed after initial shut-off,the bypass valve will hose to drain into the tank. Attention: In the event close and will restrict all fuel delivery. you are splashed, remove all wetted clothing immediately. Do not go into an enclosed area and The 71 SO models of the 71 SO are designed to be stay away from ignition sources. installed with the following OPW products:Face Seal Adaptor, OPW Spill Container or Multi-port,Jack IMPORTANT Screw Kit, Rotatable Product Adaptor, and Product Determine if the underground storage tank is Cap. equipped with a ball float vent valve,as illustrated in Figure 24. In all systems,the shut- IMPORTANT off point of the 71 SO must be reached before the Read these assembly and installation instructions ball float reduces flow to ensure proper overfill completely and carefully prior to starting. Check to valve operation. make sure all parts have been provided. Use only the parts supplied;substitution of parts may cause product failure. TOOLS NEEDED FOR INSTALLATION AND ASSEMBLY: Failure to follow instructions may cause improper 1. 71 SO-TOOL(includes the following) product operation or premature failure which may a. Sharp 3/16"drill bit with stop permit storage tank overfill. An overfilled storage b. Punch tank may create hazardous conditions and/or 2. Drill environmental contamination. 3. Hammer 4. Tape measure CAUTION 5. Hacksaw or cut-off saw,fine tooth;24 teeth/inch Do not remove elastic band from around float until 6. Fine half round file instructed to do so,as damage to valve may result. 7. Screwdriver-Phillips blade 8. Fine grit sandpaper/steel wool WARNING 9. Grease, black moly Failure to properly connect delivery hose and elbow, 10. Torque Wrench and/or disconnecting a liquid filled delivery hose or 11. Band clamp(3-3/4"diameter minimum) elbow will result in a hazardous spill, which may result in personal injury, property damage,fire, WARNING explosion,and water and soil pollution. Using electrically operated equipment near gasoline • Make sure all connections, including the hose or gasoline vapors may result in fire or explosion, and elbow connections, between storage tank causing personal injury and property damage. and transport are securely coupled. Check to assure the working area is free from such • Make sure the lip seal and/or all gaskets in the hazards, and always use proper precautions. delivery elbow are properly in place to prevent spills. IMPORTANT:The figures in this installation and • Do not operate with damaged or missing parts, maintenance instruction may contain vapor recovery which prevent tight connections. equipment(including model numbers)that is not certified by the California Air Resources Board (CARE)for a specific Phase I Vapor Recovery System. Please refer to Exhibit 1 of the appropriate CARB Phase I Executive Order for a list of certified Phase I Vapor Recovery System Equipment. OPW 71 SO Overfill Prevention Valve Page 2