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0 P W 5 3 V B A L L <br />110 <br />0_ <br />F L 0 A T V E N T <br />OPW 53VML Bull 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 stor- <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 />lent 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 />s 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 />s 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withdrawn, eliminating the need to 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 />s 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 />s OPW Ball Float Vent Valves are <br />covered under patent no. 3,736,950. <br />OPW <br />VALVES <br />Unique Features: <br />1. Vapor flow orifice - properly sized <br />to cause a "slow down" effect and <br />reduce delivery flow. <br />2. Duragard® Coating - resists <br />corrosion to provide long life and <br />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 />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 />should only be used on submerged <br />pumping systems, not suction pump <br />systems. For special applications, con- <br />tact OPW Fueling Components. <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 />Telephone: (513) 8703219 • (8001422 2525 • Fox.1513) 8709186. (8001421-3297 <br />®1992 OPW Fueling ompo eenh • P.O. Box 405003 • Gndr nali, OH 45240-5003 • Printed in USA. TV431294.12/94 <br />