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1 7 Dry fitting secondary Cutting containment piping <br /> containment systems Ameroncontainmentpipingemploysastraightjoint.Useoftaperedpipeend <br /> straight containment fittings will result in a gap in the joint.When employing p <br /> has been delivered with afactory taper as containment piping,remove the taF <br /> shown in Fig.7-1. <br /> I After cutting containment pipe to length,use a flapper sander,coarse sandpa <br /> emery cloth to remove the surface gloss for 1 to 1'h inches from the square-c( <br /> I — the pipe.Surface glos <br /> Protective end cap conveniently remove( <br /> I (from factory) the containment pipe <br /> ' placed over the prima <br /> Cut pipe here if tapered <br /> (discardtaper) Place containment fit <br /> I <br /> Fig.7-1.Some containmentpipe may �' under the dry-fit prim. <br /> be received with tapered ends.Cut off fittings when measuri <br /> ' the tapers and remove the surface gloss length of containmen <br /> for 1 to 1112 inches be cut.Cut the contai <br /> ' from the end of the pipe. <br /> � pipe to allow 1 to 1'h i <br /> Remove surface gloss insertion into each Fitt <br /> I - Factorytaper shown in Fig.7-2. <br /> LRemove gloss from <br /> I01- <br /> ior of secondary <br /> Ir - - - - - - - - - - <br /> Fig.7-2.Always include a coupling in 1-t'rs - <br /> the secondary wherevera primary <br /> coupling is located. <br /> Fig.7-3.In runs less than the standard n<one standard <br /> pdmdlength <br /> 20-foot primary pipe length,include a (runn under <br /> nunder ergo n) I I <br /> containment coupling to provide <br /> access to the primary during bonding, <br /> testing andinspection. Inshortprimaty — — — _ - - ____-_ _ <br /> runs where lack of space prevents the use - - - - - - - <br /> of full-length containment coupling,use <br /> -- <br /> a half-coupling instead. <br /> Cutting containment couplings <br /> The center holes on 2-inch couplings have been located near the middle of tt <br /> coupling.Cut exactly between these two holes.The resulting half-couplings <br /> 7 inches long.Two cuts are necessary when making 3 and 4-inch half-coupli <br /> The resulting half-couplings are 51h inches long. <br /> D I— D <br /> 0 0 <br /> 0 0 <br /> Fig.7-4. Cut full-length couplings so <br /> that all bolt holes on half-couplings are <br /> equidistant from the ends. 0 0 0 <br /> Cut to make 2-inch <br /> half-couplings <br /> Cut to make 3,4 and 6-Incr <br /> half-couplings <br /> 6 <br />