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Red Thread Ila History 7. 7- r z <br /> In 1968, this product was UL Listed as "Nonmetallic <br /> Underground Piping for Petroleum Products Only." Under the <br /> UL test program, the pipe was totally immersed in the following .su <br /> chemicals(all at 100°F). <br /> • Regular leaded gasoline, -. t <br /> • Premium unleaded gasoline, y. <br /> • Premium leaded gasoline, <br /> • No. 2 fuel oil, <br /> • Benzene Owl <br /> • Toluene <br /> s <br /> • ASTM reference fuel C, S <br /> • ASTM reference fuel A, <br /> • Distilled water, <br /> • Nitric acid(5%by weight(, M„ <br /> • Sodium carbonate and sodium bicarbonate solution, <br /> • Sodium chloride solution(saturated), <br /> • Dilute sulfuric acid (pH=3) <br /> • Dilute sulfuric acid (20%by weight). <br /> NOV Fiber Glass Systems recommended this pipe for <br /> methanol/gasoline blends up to 5% methanol at temperatures _ p..- <br /> up to 75°F. The pipe was also recommended for all mixtures of <br /> ethanol and gasoline including 100,6 ethanol. A <br /> In 1984, the Red Thread 11 system carried the same UL <br /> listing as in 1968 and NOV Fiber Glass Systems recommended <br /> the piping system for all ethanol and methanol blends up to 100% <br /> at temperatures up to 75'F <br /> In 1990,NOV Fiber Glass Systems began manufacturing Red <br /> Thread IEA. This product was UL Listed for petroleum products, <br /> alcohols (ethanol and methanol) and alcohol gasoline mixtures. <br /> In 1995 and 2005, the UL standard changed and each time the <br /> Red Thread IIA piping system passed all new requirements. <br /> For additional product information and location of the NOV <br /> Fiber Glass Systems Regional Managers and Manufacturer's <br /> Representatives,visit www.fgs.pipe.com. , <br /> Old vs.New-Pipe in the foreground was kadaged in 1973 and removed <br /> 27 years later when the station eased. '- <br /> 3 <br />