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o <br />Ji-.�a � `� �U►P <br />ENVIRONME�NTAL HEALTH <br />G j -M <br />JOINT ASSEMBLY FOR RED THREAD IIA <br />AND DUALOY 3000/1- SECONDARY <br />CONTAINMENT PIPING <br />Prior to bonding, make sure the pipe fits snugly into the ends <br />of the two-piece fittings and there are no gaps between pipe <br />ends and assembled fitting "sockets". A properly bonded joint <br />should have adhesive visible from all bonded surfaces. For <br />closed interstitial monitored systems which require inserts for <br />Red Thread IIA, see instructions below. <br />After cleaning the inside surfaces (I.D.) of both halves of the <br />two-piece fitting, apply a thick coating (1/16"- 1.6 mm mini- <br />mum of filled adhesive to the surfaces to be bonded of both <br />halves of the fitting, including the flanges (flat bonding sur- <br />faces). Next apply a thick coating (1 /16"- 1.6 mm minimum) of <br />adhesive to the scarfed or sanded surfaces of the pipe ends. <br />Assemble the containment fitting by placing the half with the <br />pre-installed threaded female inserts on the bottom. Insert the <br />pipe in the fitting. Do not insert pipe past the scarfed area. <br />Apply top half of the containment fitting. Use the bolts sup- <br />plied with the clamshell fitting to assemble the fittings on the <br />pipe. Use of an air or electric wrench with a magnetic socket <br />will greatly facilitate assembly. When starting the bolts, allow <br />the bolt to start with minimal pressure on the tool. Excessive <br />pressure may push the insert from the fitting. Tighten the bolts <br />alternately and with equal force. Do not exceed 8 ft -lbs of <br />torque. For elbow and tee containment fittings, it is recom- <br />mended that the inner side of the fitting be assembled first <br />(inner radius of elbow or sides of the branch of a tee). <br />For Red Thread IIA pipe, inserts must be used on 3" (75 mm) <br />and 4" (100 mm) 90° elbows and tees for closed systems ca- <br />pable of being interstitial monitored. Inserts are not required <br />for Open (Gravity Flow) Systems. Prior to bonding the insert, <br />spread the insert splice 3 or 4 times to relax the insert. The <br />insert may be placed on the containment pipe or primary fit- <br />ting for easy access prior to bonding of the containment fitting. <br />Locate the inserts next to the inside radius of the containment <br />fitting, as shown on drawing below. The split in the insert must <br />be facing up (90° to the flanges). Do not allow insert to overlap <br />itself. <br />53 <br />