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f] <br />E <br />a <br />! FLOAT BALL <br />OPW 53VML Ball Float Vent Valves, when installed in an OPW 233V Extractor <br />Fitting, form a system that helps prevent product mixing and meets the Federal <br />EPA's 90% flow restriction requirement for overfill prevention of underground stdr,- <br />age tanks. <br />When the UST is filled to a predetermined level, the stainless steel ball float rises <br />to seat tightly against a specially designed valve seat. This restricts the flow of <br />vapors back to the delivery transport or tank vent. The pressure created in the UST <br />by the vapor flow restriction works against the head of liquid remaining in the deliv- <br />ery transport and hoses to reduce the incoming flow rate. <br />The OPW 53VML provides consis- <br />tent performance and long service <br />life: <br />Proven Concept - the basic ball <br />float concept has been proven in <br />numerous applications to help <br />prevent product contamination. <br />® Corrosion Resistant - the OPW <br />53V Series is coated with Duragard' <br />and resists corrosion to provide long <br />life and tight shut-off. <br />* Easy to Service - the float vent <br />valve assembly can be easily <br />withdrawn, eliminating the need to <br />dig to the tank for service. <br />* Flexible - the various OPW float <br />vent valves and extractor fitting <br />assemblies can be combined to meet <br />various piping requirements and/or <br />system operating characteristics. <br />* Adaptable - many tanks are already <br />equipped with OPW extractor <br />assemblies, so overfill prevention can <br />be easily achieved. <br />Easy Tank Testing - when using <br />OPW overfill systems, the extractors <br />are easily plugged for testing. <br />® OPW Ball Float Vent Valves are <br />covered under patent no. 3,736,950. <br />♦ OOVER PES -CES COfNANY <br />Unique Features: <br />1.Vapor flow orifice - properly sized to <br />cause a "slow down" effect and <br />reduce delivery flow. <br />2. Duragard' Coating - resists <br />corrosion to provide long life and <br />.F._ 2 tight shut-off. <br />3. Sealed Cage Points - eliminates <br />uncalibrated vapor loss, assures <br />proper "slow down" effect. <br />4. Stainless Steel Float with <br />go3 Counterweight - assures proper <br />alignment and tight shut-off. <br />Corrosion proof for long life and <br />tight shut-off. <br />Warning <br />OPW Overfill Warning Systems <br />E4_ 4 should only be used on submerged <br />pumping systems, not suction pump <br />systems. <br />OPW Overfill Warning Systems <br />should only be used on gravity drop <br />systems. DO NOT use where Pump Off <br />Unloading is used. <br />Materials <br />Pipe nipple: steel <br />Coating: Duragard® <br />Cage: stainless steel <br />Ball: stainless steel <br />P.O. Box 405003 ® Gncinnati, Ohio 45240.5003 ® Telephone: (513) 870.3219 ® (800) 422.2525 ® Fax: (800) 421-3297 <br />O Copyright 1992 ON Fueling Components/A Dover Resources (ompany, Printed In USA 9/92 <br />