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Piping System Precision pipe exterior eliminates scarfing — Dualoy pipe is manufactured in a proprietary continuous <br />Characteristics winding process that provides an extremely precise, consistent outside diameter. Light sanding of the pipe <br />end to remove the surface gloss and obtain a suitable bonding surface is the only end prep required, although <br />the scarfing feature of tapering tools can be used. <br />Easy containment fitting assembly —Dualoy3000/1-containmentfitting clamshells are supplied in matched <br />pairs. One half of each pair is fitted with pre -inserted propeller nuts, allowing the fitting to be assembled from <br />one side, using the bolts provided. <br />Complete retestability — Dualoy 3000/1- containment employs rigid -wall pipe and fittings that maintain their <br />slope during the entire service life of the station. When installed with isolating penetration fittings (see,�, page <br />3), Dualoy 3000/1- containment piping can be repeatedly retested whenever desired. <br />Convenient repair capability — Contained piping systems are occasionally damaged after installation. <br />Damage is generally caused by paving or excavation operations. Dualoy3000/L contained piping systems <br />are designed so that only the damaged section need be replaced instead of the entire line. The 2 -inch Dualoy <br />repair coupling is sized so that it can be contained within 4 -inch Dualoy 3000/1- containment pipe. <br />Two-inch primary pipe con- <br />tained within 34nch contain- <br />ment pipe can be repaired with <br />a UL -listed 2 -Inch repair cou- <br />pling. The containment is re- <br />stored by replacement of a sec - <br />ton of the existing containment <br />pipe with a 4 -inch containment <br />nipple. The 4 -inch replacement <br />nipple is then joined to the ex- <br />isting containment pipe with <br />Dualoy reducing couplings. <br />FIS710 <br />X2 0 1 <br />T <br />A <br />A - A <br />A <br />0 <br />4 x3 inch reducing <br />✓ Couplings <br />2 nr <br />-4-hrepaircouplirig <br />0 0 <br />Align wing -nuts parallelto pipato permit <br />44nchpipe 4inch pipe toslip over repairvouping <br />3 80 3.50 1 3.32 1 — I — I — 1 0.72 <br />4 100 4.50 4.33 1 <br />6 150 6.63 6.39 2.10 <br />J., I <br />80 <br />4.28 <br />7.28 <br />1.50 <br />1.50 <br />5 <br />1.1 <br />4 <br />100 <br />4.77 <br />8.25 <br />— <br />1.50 <br />5 <br />150 6.32 <br />6 <br />150 <br />5.62 <br />10.53 <br />— <br />2.00 <br />8 <br />7.5 <br />3 <br />80 3.50 <br />600 <br />1.50 <br />6 <br />0.8 <br />4 <br />100 3.75 <br />7.00 <br />1.50 <br />5 <br />2 <br />6 <br />150 6.32 <br />9.75 <br />2.00 <br />a <br />11.5 <br />"EN IRONM-ENTA! <br />