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OPW 61 SO Overfill Materials Prevention Valves Valve body: Cast aluminum Important Float: Nitrile rubber,closed cell foam In order to prevent product spillage • The OPW 61 SO Overfill Prevention Valve from the Underground Storage Tank Valve:Aluminum (UST),properly maintained delivery is designed to prevent the overfill of equipment and a proper connection Seals:Viton" at the tight-fill adaptor are essential. underground storage tanks by providing Delivery personnel should be a positive shut-off of product delivery. Upper&lower Drop Tube:Aluminum managed and trained to inspect The shut-off valve is an integral part of the Plastic parts:Acetal delivery elbows and hoses for damaged and missing parts. • drop tube used for gravity filling.The OPW Hardware: Stainless steel They should always make certain • 61 SO allows easy Installation(without -- there is a positive connection between the adaptor and elbow.If breaking concrete)and requires no special Features delivery equipment is not properly • maintained,or the elbow is not manholes. ♦Simple, Easy and Quick Installation securely coupled to the adaptor,a The OPW 61 SO is a two-stage shut-off —no excavation or special manholes serious spill may result when the OPW 61 SO closes,causing a hazard valve.When the liquid level rises to about required. and environmental contamination. 95%of tank capacity,the valve mechanism ♦ Economical—costs a fraction of NOTE:The OPW 61 SO is designed is released,closing automatically with expensive,complicated and difficult- for use on tight-fill gravity drop applications only. Do not use for the flow.This reduces the flow rate to to-install valves. pressure fill applications. approximately 5 gpm through a bypass ♦Furnished Complete—supplied with valve.The operator may then stop the new upper and lower drop tubes, filling process and disconnect and drain mounting hardware and thorough the delivery hose.As long as the liquid instructions for quick job site time. exceeds the 95%level,the valve will ♦Completely Automatic Operation— ♦ Retrofits Directly—for both new and close automatically each time delivery no prechecks to perform, no resets, existing tanks with 4"fill risers. is attempted. and no overrides to be broken or abused. ♦Quick Drain Feature—automatically If the delivery is not stopped and the ♦No Pressurization of the Tank— drains hose when head pressure is liquid rises to about 98%of tank capacity, operates directly from liquid level. relieved. the bypass valve closes completely. No ♦Will Accept a Dipstick for Gauging ♦Best Flow Rate in The Industry* additional liquid can flow into the tank 'Test-witnessed by Bowser•Morner,Inc.,an independent laboratory.Results available upon request. until the level drops below a reset point. Models of the 61 SO are available Advantages of Overfill Prevention to meet virtually any UST application Compared to Overfill Warning Systems: including two-point,coaxial, poppeted ♦ Completely Automatic Operation ♦ Speeds Delivery Operations— coaxial and remote fill. Methanol —does not rely on the alertness or product flows unimpeded into the tank approved models are also available. speed of response of the delivery until the hose"kick"that accompanies The OPW 61 SO is approved by the attendant for certainty of overfill the valve shut-off provides a clear New York City Fire Department. prevention. signal that the liquid has reached the ♦ Keeps the Top of UST"Dry,"per shut-off level. (Approval#4902). EPA Requirements—eliminating g ♦ Simple and Inexpensive Installation— possible leaks at loose bung fittings 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. ♦ Does Not Rely on Pressure in the Look for this label for UST to StopFlow faster fill authentic OPW EVR ow—allowing Approved products, times and reducing spill risk. OPW• Listings and Certifications NY City Fire Qand Listings Department P VV-� Certifications 61 SO Series Approval#4902 A DOVER COMPANY