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Fled Thread IIA History <br /> In 1968, this product was UL Listed as "Nonmetallic ' .��I`je) - 5 ri <br /> Underground Piping for Petroleum Products Only." Under the t •UL test program, the pipe was totally immersed in the following <br /> chemicals (all at 100°F). ��0, l' <br /> • Regular leaded gasoline, 7 <br /> • Premium unleaded gasoline,:'_ Z <br /> I - :A <br /> • Premium leaded gasoline, y _ <br /> • No.2 fuel oil, I n <br /> • Benzene `r° ` , I <br /> r� ' <br /> • Toluene Z [— c_; JL <br /> ;,. <br /> ASTM reference fuel C, <br /> • ASTM reference fuel A, � <br /> • Distilled water, <br /> • Nitric acid (5%by weight(, 1 <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 ; <br /> up to 75°F. The pipe was also recommended for all mixtures of <br /> ethanol and gasoline including 100%ethanol. ra <br /> In 1984, the Red Thread II 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% 'A- <br /> at <br /> at temperatures up to 75°F. <br /> In 1990,NOV Fiber Glass Systems began manufacturing Redd <br /> Thread IIA. This product was UL Listed for petroleum products, '• <br /> alcohols ethanol and methanol and alcohol/gasoline mixtures. <br /> ( ) 9 :.;', <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 on""-,mom+ <br /> Fiber Glass Systems Regional Managers and Manufacturer's �` "`'=`'• <br /> Representatives,visit www.fgs.pipe.com. <br /> Y <br /> Old vs.New-Pipe in the foreground was installed in 1973 and removed <br /> 27 years later when the station closed. <br />