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OPW: Products: Category <br />O P W4► <br />Page 1 of 2 <br />9 <br />Home Contact Us Careers Links Logout Dover Operatir <br />COMPANY PROFILE ' PRODUCTS FIND DISTRIBUTORS NEWS EVENTS INTERACTIVE <br />Search by Model Number: <br />Model Number: <br />Description: <br />Browse by Categories: <br />Category: Select Category <br />Product Ci <br />IMPORTANT: OPW products should be used in compliance with applicable federal, state, provincial, and local laws and regulations. Pr <br />should be based on physical specifications and limitations and compatibility with the environment and materials to be handled. OPW I <br />WARRANTY OF FITNESS FOR A PARTICULAR USE. All illustrations and specifications in this literature are based on the latest product i <br />available at the time of publication. OPW reserves the right to make changes at any time in prices, materials, specifications and mod, <br />discontinue models without notice or obligation. <br />OPW > OPW Environmental > Underground Storage Tank Equipment > Overfill Prevention Equi <br />61SO Overfill Prevention Valves <br />61SO Overfill Prevention Valves <br />The OPW 61SO Overfill Prevention Valve is designed to preven <br />underground storage tanks by providing a positive shut-off of 1 <br />The shut-off valve is an integral part of the drop tube used for <br />The OPW 61SO allows easy installation (without breaking conc <br />requires no special manholes. <br />The OPW 61SO is a two-stage shut-off valve. When the liquid I <br />about 95% of tank capacity, the valve mechanism is released, <br />automatically with the flow. This reduces the flow rate to apprc <br />through a bypass valve. The operator may then stop the filling <br />disconnect and drain the delivery hose. As long as the liquid e <br />level, the valve will close automatically each time delivery is at <br />If the delivery is not stopped and the liquid rises to about 980/c <br />capacity, the bypass valve closes completely. No additional lige <br />the tank until the level drops below a reset point. Models of tht <br />available to meet virtually any UST application including two -p <br />poppeted coaxial and remote fill. The 61SO-3000 provides two <br />protection for 3" riser pipes, and the 61SO-1000 and 61SO-10 <br />feature a grooved -tube design for use with tank gauging syste <br />and CARB (vapor -tight) approved models are also available. Tt <br />approved by the New York City Fire Department. (Approval #4 <br />Important <br />In order to prevent product spillage from the Underground Sto <br />properly maintained delivery equipment and a proper connecti, <br />adaptor are essential. Delivery personnel should be managed z <br />inspect delivery elbows and hoses for damaged and missing pa <br />always make certain there is a positive connection between thf <br />elbow. If delivery equipment is not properly maintained, or the <br />securely coupled to the adaptor, a serious spill may result whe <br />closes, causing a hazard and environmental contamination. <br />NOTE: The OPW 61SO is designed for use on tight -fill gravity <br />only. Do not use for pressure fill applications. <br />https://www.opw-fc.com/product_category.aspx?cid=56 2/11/2007 <br />