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CNI Manufacturing Installation , Operation and Maintenance Manual ( IOM ) <br /> Applicable to Executive Order VR- 104- 1 <br /> 4 ) Cut the 4 inch N . P . T Containment Nipple to Length and Install <br /> DO NOT USE HACKSAW TO CUT CONTAINMENT NIPPLE . <br /> a ) Once the proper nipple length is established , use a roller style , 24ade pipe cutter to <br /> ensure a flat square cut across the top of the nipple . Verify squareness with a T-square <br /> or bevel <br /> b ) Cut tapered N . P . T . threads on both ends of the 4 inch nipple for a minimum length of <br /> 1 1 /8 inches . <br /> c) Ensure that a square , flush , smooth , sealing surface is achieved across the top of the <br /> nipple . De -burr and clean nipple threads . <br /> d ) Apply Teflon® , Fire Marshall approved thread sealing compound on the lower threads <br /> of the 4 inch containment nipple . <br /> e ) Manually tighten the containment nipple into the round flange , then torque to value <br /> specified in Table 1 . <br /> 5 ) Install Rotatable Vapor Adapter <br /> a ) Install the rotatable vapor Adapter according to the manufacturer installation instructions <br /> that are included in this manual . <br /> Note : CNI Mfg . tool part number ( p/n ) EVRSYS106 must be used to achieve the correct <br /> torque when installing the Emco Wheaton Retail Rotatable Adapter onto the containment <br /> nipple . This tool is ordered separately . <br /> i <br /> EVRSYS105 <br /> Rotatable adaptor tool f f <br /> t <br /> ( Example ) <br /> 15627 ARROW HIGHWAY, IRWINDALE, CALIFORNIA 91706 <br /> PHONE (626) 962-6646 ; OUT OF STATE CALLS (800) 4CNkMFG ; FAx (626) 9624854 25 <br /> WEBSITE : WWW. CNI-MFG . COM EMAIL : INFO(CDCNI-MFG . COM <br />