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Piping system <br />Secondary employs full-performance pipe — Many contained fuel handling systems <br />characteristics acteristics <br />employ materials in the secondarythatfall far short of the primary piping in regards to <br />chemical resistance and mechanical strength. By contrast, Dualoy 3QDD/L systems <br />employ the same We of high-performance fiberglass-reinforced pipe In the secondary as <br />in the primary. Thus, Dualoy 3DOOIL containment systems easily withstand both high <br />external loads from backfill and traffic as well as internal pressures as high as 100 psig. <br />Compact containment fitfings—Dualoy 30001L containment fMngs are more compact <br />than competitive clam-shelf type closure piece. As a result, crossovers in a Dualoy <br />3000/. system oc cupy less space, so less excavation is required titan with competing <br />rigid-wall containment systems. <br />Precision pipe exterior allmirafts scarfing— Dualoy pipe is rnanufadu red in a <br />proprWWY continuous prwess the provides an extremely precise, consistent <br />— <br />outside diameter. No scarfing ofthe pipe encs is required to achieve a properfit ofthe <br />secondary pipe inside closure pieces. Light sanding afthe pipe end to remove the surface <br />OnlyendpWmpAW <br />gloss and obtain a suitable bonding surface is the only end prep required. <br />istheremovalbyigfit <br />Easy containment fitting asseff4 —Dualoy3D00/Lcontainment ftngdamsheits <br />tkm SOX&Vofsurfew <br />are matched retched pairs. Onel half of each pafrts fitted with propeller <br />ruts, aging tate fitting to he assembled from one side, using the bolls provided. <br />Complete biiity-- Duatoy300K containmart employs rigid-wall pipe and <br />that maintain their shape during the entire service Na ofthe station. When installed <br />with l (see page4), Dualoy 3000/L containment: piping can be <br />repeatedly retested wher~ desired. <br />Convenient ropg& capability — Contained piping systems are occasionally damaged <br />after installation. Damage Is generally caused by paving or excavation operations. Dualoy <br />3000/. contained piping systems are designed so that only the damaged stretch need be <br />repliiiced instead ofthe entire One. The 2-Inch Dualoy repair coupft is sized so that it can <br />be contained wtihin flinch Dualoy 3WK containment pipe. <br />