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Red Thread 11A History r.: <br /> In 1968, this product was UL Listed as "Nonmetallic •t _' t <br /> Underground Piping for Petroleum Products Only." Under the <br /> UL test program, the pipe was totally immersed in the following <br /> chemicals (all at 100T). 77 7+'• <br /> • Regular leaded gasoline, -"� <br /> • Premium unleaded gasoline, <br /> • Premium leaded gasoline, <br /> • No.2 fuel oil, <br /> • Benzene <br /> • Toluene t� <br /> • ASTM reference fuel C, <br /> • ASTM reference fuel A, <br /> Distilled water, ' <br /> • Nitric acid (5%by weight(, ter- <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). as <br /> NOV Fiber Glass Systems recommended this pipe for <br /> methanol/gasoline blends up to 5% methanol at temperatures ►>. •_ �j�_ <br /> up to 75T The pipe was also recommended for all mixtures of <br /> ethanol and gasoline including 100°.ethanol. <br /> In 1984, the Red Thread 11 system carried the same ULr��', <br /> listing as in 1968 and NOV Fiber Glass Systems recommended <br /> the piping system for all ethanol and methanol blends up to 1{]0% !at temperatures up to 75°F. �-•' __'-- - � <br /> In 1990,NOV Fiber Glass Systems began manufacturing Red <br /> -� <br /> Thread IIA. This product was UL Listed for petroleum products, • ' s <br /> alcohols (ethanol and methanol) and alcohol/gasoline mixtures.In 1995 and 2005, the UL standard changed and each time the <br /> Red Thread IIA piping system passed all new requirements, r 7 <br /> For additional product information and location of the NOV <br /> Fiber Glass Systems Regional Managers and Manufacturer's 1"J` •_- s , <br /> Representatives,visit www.fgs.pipe.com. <br /> . _ s <br /> Old vs.New-Pipe in the foreground was installed in 1973 and removed <br /> 27 years later when the station closed. <br /> 3 <br />