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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-Dualoy 3000/L containment fitting 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/L 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/L 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/L containment pipe. <br /> Two-inch primary pipe con- <br /> tained within 3-inch contain- <br /> ment pipe can be repaired with couplings <br /> a UL-listed 2-inch repair cou- 2-inch repaircoupling <br /> pling. The containment is re- v o <br /> stored by replacement of a sec- ° <br /> tion of the existing containment °_ ___ a________ ___ <br /> pipe with a 4-inch containment <br /> 4v L_ <br /> nipple.The 4-inch replacement 1 <br /> nipple is then joined to the ex- A'` ''''o"'©'''' ' 'o <br /> isting containment pipe with p <br /> Dualoy reducing couplings. n o <br /> Align wirx-nuts parallel to pipe to perrnit <br /> 4-inchpipe 4-inchpipe toslipover repaircoupling <br /> Containment Pipe and Nominal <br /> Fittings Dimensions Pipe of <br /> in mm in in in in Bolt Holes <br /> Pipe 3 80 3.50 3.32 0.72 <br /> 4 100 4.50 4.33 1.00 <br /> 6 150 6.63 6.39 2.10 <br /> 900 Elbows 3 80 4.28 7.28 - 1.50 5 1.1 <br /> 4 100 4.77 8.25 - 1.50 5 1.3 <br /> 0 ° 6 150 5.62 10.53 - 2.00 8 1.5 <br /> X2 a f 5 <br /> V A <br /> t I-- A �I <br /> 450 Elbows 3 80 3.50 6.00 - 1.50 5 0.8 <br /> 4 100 3.75 7.00 - 1.50 5 1.2 <br /> # o ° - <br /> J p 6 150 6.32 9.75 2.00 8 1.5 <br /> ti <br /> B . <br /> t n <br /> xa+ $ <br /> 2 <br />