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GENERAL INSTRUCTIONS Overfilled Tank: Failure of the hose to drain after The OPW 71 SO Overfill Prevention Valve is closing the delivery valve signals an overfilled tank. designed for tight fill, gravity drop applications to Do Not Disconnect any delivery hose fitting until the help prevent accidental or intentional overfilling of liquid level in the tank has been lowered to allow the underground storage tanks. It is installed in the UST hose to drain into the tank. drop tube in place of a standard drop tube. The main 71 SO valve closes when liquid level is at WARNING 95% of the top of the tank. A small bypass valve In the event you are splashed with fuel remove wet remains open to allow the delivery hose to drain at clothing immediately. Skin contact with gasoline can 3-5 gallons per minute. If the delivery truck valve is cause chemical burns and may result in inhalation of not closed after initial shut-off, the bypass valve will vapors that may be fatal. Never go inside confined close and will restrict all fuel delivery. areas after being splashed and never go near ignition sources. The 71 SO models of the 71 SO are designed to be installed with the following OPW products: Face Seal IMPORTANT Adaptor, OPW Spill Container or Multi-port, Jack Determine if the underground storage tank is Screw Kit, Rotatable Product Adaptor, and Product equipped with a ball float vent valve, as Cap. illustrated in Figure 24. In all systems, the shut- off point of the 71 SO must be reached before the IMPORTANT ball float reduces flow to ensure proper overfill Read these assembly and installation instructions valve operation. completely and carefully prior to starting. Check to make sure all parts have been provided. Use only the parts supplied; substitution of parts may cause TOOLS NEEDED FOR INSTALLATION AND product failure. ASSEMBLY: 1. 71 SO-TOOL or 71 SO-TOOLC (includes the Failure to follow instructions may cause improper 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. Do not operate with damaged or missing parts, IMPORTANT: The figures in this installation and which prevent tight connections. maintenance instruction may contain vapor recovery equipment(including model numbers)that is not certified by the California Air Resources Board Normal Operation: A Hose "Kick" and reduced flow (CARB)for a specific Phase I Vapor Recovery signal that the tank is full. Close transport delivery System. Please refer to Exhibit 1 of the appropriate valve and drain hose into tank before disconnecting CARB Phase I Executive Order for a list of certified any hose fitting. Phase I Vapor Recovery System Equipment. OPW 71 SO Overfill Prevention Valve Page 2