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Materials f OPW 71 SO Overfill Valve body : Cast aluminum Important Prevention Valves In order to prevent product Float : Nitrile rubber, closed cell foam spillage from the Underground The CARB-certified OPW 71 SO Valve : Aluminum Storage Tank (UST), properly maintained delivery equipment vapor-tight Overfill Prevention Valve Seals : Viton° ' and a proper connection at the Upper & lower Drop Tube: Aluminum tight-fill adaptor are essential, is designed to prevent the overfill of Delivery personnel should be underground storage tanks by providing Plastic parts : Acetal managed and trained to inspect delivery elbows and hoses for a positive shut-off of product delivery. Hardware: Stainless steel damaged and missing parts. The shut-off valve is an integral part of • They should always make certain there is a positive the drop tube used for gravity filling. The connection between the adaptor OPW 71 SO allows easy installation Features and elbow. If delivery equipment is not properly maintained, or the (without breaking concrete) and requires ♦ Simple, Easy and Quick Installation elbow is not securely coupled no special manholes. — no excavation or special manholes to the adaptor, a serious spill may result when the OPW 71 SO The OPW 71 SO is a vapor-tight two= required . doses, causing a hazard and ♦ Economical — costs a fraction of environmental contamination. stage shut-off valve. When the liquid expensive, complicated and difficult- NOTE: The OPW 71 SO is level rises to about 95% of tank capacity, to-install valves, designed for use on tight-fill the valve mechanism is released , - gravity drop applications only. closing automatically with the flow. This ♦ Furnished Complete — supplied Do not use for pressure fill with new upper and lower drop tubes, applications. reduces the flow rate to approximately mounting hardware and thorough 5 gpm through a bypass valve . The instructions for quick job site time. operator may then stop the filling ♦ Completely Automatic Operation — no ♦ Retrofits Directly — for both new and process and disconnect and drain the prechecks to perform , no resets and no existing tanks with 4" fill risers. delivery hose . As long as the liquid overrides to be broken or abused . ♦ Quick Drain Feature — automatically exceeds the 95% level , the valve will ♦ No Pressurization of the Tank — drains hose when head pressure is close automatically each time delivery operates directly from liquid level . relieved . is attempted . ♦ Will Accept a Dipstick for Gauging ♦ Best Flow Rate in The Industry* If the delivery is not stopped and * Test witnessed by Bowser• Morner, Inc . , an independent laboratory . Results available upon the liquid rises to about 98% of tank request . capacity, the bypass valve closes Advantages of Overfill Prevention completely. No additional liquid can flow Compared to Overfill Warning Systems: into the tank until the level drops below ♦ Completely Automatic Operation ♦ Speeds Delivery Operations — a reset point. — does not rely on the alertness or product flows unimpeded into the tank speed of response of the delivery until the hose "kick" that accompanies 71S ns c h 'et Ord I^:� attendant for certainty of overfill the valve shut off rovides a clear Num r l 15 %awop � V E D P prevention . signal that the liquid has reached the A R (1 - 2 019 ♦ Keeps the Top of UST "Dry, " per shut-off level . (\v/1 EPA Requirements — eliminating ♦ Simple and Inexpensive Installation — possible leaks at loose bung fittings in both two-point and coaxial fill ENVIRONMENTAL HEALTH and the need for double containment applications, no additional excavation , r) 1� p/9TMENT on vent lines. manholes or vent piping are required . ♦ Does Not Rely on Pressure in the UST to Stop Flow — allowing faster fill times and reducing spill risk . Listings and — of Look for this label for 0— ULC authentic OPW EVs, O Certifications Curia Board i Approved products. Resources Board cy a , w • UOVEfl comw v