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Materials OPW 71 SO Overfill Valve body: Cast aluminum Important Prevention Valves Float: Nitrile rubber,closed cell foam In order to prevent product spillage from the Underground The CARE-certified OPW 71 SO Valve:Aluminum StorageTark(UST),properly maintained delivery equipment vapor-tight Overfill Prevention Valve Seals: Viten® 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 l is not properly maintained,or the (without breaking concrete)and requires i 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. closes,causing a hazard and Economical—costs a fraction of environmental contamination. stage shut-off valve.When the liquid level rises to about 95%of tank capacity, expensive, complicated and difficult NOTE:The OPW Ttso;s 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 .4 Do not use for pressure fill I with new upper and lower drop tubes, applications. reduces the flow rate to approximately t 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 close automatically each time ♦ No Pressurization of the Tank— drains hose when head pressure is y delivery operates directly from liquid level. relieved. is attempted. li d h If the every is not stopped and ? ♦Will Accept a Dipstick for Gauging ♦ Best Flaw Rate in The Industry* E *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. t —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 71 SO Instruction Sheet order attendant for certainty of overfill the valve shut-off provides a clear Number:H15524PA I prevention. signal that the liquid has reached the ♦ Keeps the Top of UST"Dry,"per shut-off level, EPA Requirements—eliminating ♦ Simple and Inexpensive Installation— j possible leaks at loose bun fittings p g fittig in both two-point and coaxial fill , and the need for double containment applications,no additional excavation, , on vent lines. manholes or vent piping are required. 4 Does Not Rely on Pressure in the UST to Stop Flow—allowing faster fill times and reducing spill risk. I Listings and �_ Lockhentic his label ler au[henNc OPw EVR. �/ Certifications caivaair Approved products Q FO V V Resources Board A eEIYEB cOMa a d