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Red Thread IIA History n 7 „N 11. ' r i I . In 1968 , this product was UL Listed as " Nonmetallic I, I ! . � ; il Underground Piping for Petroleum Products Only. ' Under theMai �_ . ;- ~ , 114 UL test program , the pipe was totally immersed in the followingMOM 4 r, chemicals (all at 100°F) . — —`l • Regular leaded gasoline , - Jaft - Premium unleaded gasoline , • Premium leaded gasoline , +.r._.r • No . 2 fuel oil , • Benzene • Toluene • ASTM reference fuel C , • ASTM reference fuel A, • Distilled water, • Nitric acid (5% by weight ( , - r • Sodium carbonate and sodium bicarbonate solution , • Sodium chloride solution saturated , • Dilute sulfuric acid (pH = 3) • Dilute sulfuric acid (20% by weight) . NOV Fiber Glass Systems recommended this pipe for methanol/gasoline blends up to 5% methanol at temperatures up to 75°F. The pipe was also recommended for all mixtures of ethanol and gasoline including 100 / ethanol . eke In 1984 , the Red Thread II system carried the same UL listing as in 1968 and NOV Fiber Glass Systems recommended the piping system for all ethanol and methanol blends up to 100% at temperatures up to 75°F _ _ Z" In 1990 , NOV Fiber Glass Systems began manufacturing Red Thread IIA. This product was UL Listed for petroleum products , _' alcohols (ethanol and methanol) and alcohol/gasoline mixtures . In 1995 and 2005, the UL standard changed and each time the Red Thread IIA piping system passed all new requirements . — - For additional product information and location of the NOV " ' * """" "'stm^ Fiber Glass Systems Regional Managers and Manufacturer's Representatives , visit www.fgs . pipe . com . Wr sm Mon rte_ Old vs. New - Pipe in the foreground was installed in 1973and removedMao r 27 years later when the station closed . "# 3