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RECEIVED <br /> Piping system Secondary employs full-performance pipe— Many contained fuel handling 2 013 <br /> characteristics employ materials in the secondary that fall far short of the primary piping)NMr: <br /> chemical resistance and mechanical strength.By contrast,I 3b' �I.,,,,MENTAL <br /> employ the same type of high-performance fiberglass-reinforced pipe in thA66W8Ar9iei'1171TkI ENT <br /> inthe primary.Thus,Duoloy3OOO/Lcontainment systems easily withstand both high <br /> external loads from backfill and traffic aowell aninternal pressures mnhigh oa10Opnig. <br /> Compact containment fittings--Dualoy3OOO/Lcontainment fittings are more compact <br /> than competitive clam-shell type closure pieces.As a result,crossovers in a Dualoy <br /> 3000/L system occupy less space,so less excavation is required than with competing <br /> rigid-wall containment systems. <br /> Precision pipe exterior eliminates scarfing—Dualoy pipe is manufactured in a <br /> prietary continuous winding process that provides an extremely precise,consistent <br /> utsid <br /> e diameter.No scarfing of the pipe end is requiredto achieve a properfitofthe <br /> secondary pipe inside closure pieces.Light sanding of the pipe end to remove the surf ace <br /> Onlyendprep required / gloss and obtain osuitable bonding au�am*iothe only end prep noqui�d. <br /> _/' <br /> mm»mm»� Easy containment fitt|ngoosemhly—Duaky 3000/L containment fitting clamshells <br /> san--n"---ce— <br /> gloss. are supplied inmatched pairs,One half ofeach pair iofitted with pre-inserted propeller <br /> nuts,allowing the fitting to be assembled from one side,using the bolts provided. <br /> Complete retestability Dualoy 3000/L containment employs rigid-wall pipe and <br /> fittings that maintain their shape during the entire service life of the station.When installed <br /> with isolating penetration fittings(see page 4),Dualoy 3000/L containment piping can be <br /> repeatedly retested whenever desired. <br /> Convenient repair capability—Contained piping systems are occasionally damaged <br /> after installation.Damage is generally caused by paving or excavation operations.Dualoy <br /> 3000/lcontained piping systems are designed aothat only the damaged stretch need bo <br /> replaced instead of the entire line.The 2-inch Dualoy repair coupling is sized so that it can <br /> bocontained within 4'innhDua|oy3000Lcontainment pipe. <br /> Two-inch primary pipe contained within couplings <br /> 3-inch containment pipe can be repaired <br /> with a UL-listed 2-inch repair 2-inch repair coupling <br /> coupling.The containment is restored by 0 0 0 <br /> replacement of a section of the existing 0 -0 <br /> containment nipple.The 4-inch <br /> existing containment pipe with Dualoy 0 0 0 0 <br /> Align wing-nuts parallel to pipe to permit <br /> 4-inch pipe 4-inch pipe to slip over repair coupling <br /> 2 <br />