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L <br />D <br />n <br />u <br />r <br />U <br />Ci <br />n <br />D <br />Li <br />L <br />DoubleTra lexible Double Containment <br />11. Thread the NPT front section into the existing <br />piping (elbow, tee, valve etc). Slide the middle and back <br />sections up to the front section and hold in place. <br />NOTE: Do not use any pipe dope or thread sealants on <br />the self -flaring connection. This connection is a metal <br />to metal seat and will not seal properly if pipe dope or <br />thread sealants are used. Sealants are to be used on <br />the NPT Connector to the equipment only. <br />Insert cap screws into the back section of the fitting and <br />tighten the screws in an alternating pattern to ensure an <br />even compression of the fitting. <br />Manual <br />12. Tighten all cap screws in an alternating pattern. <br />Table 2 <br />DoubleTrac® Pipe Size Recommended Torque Values <br />7 1 " 30 FT -LBS <br />71-11"" & 2" 50 FT -LBS <br />For tightness testing of DoubleTrac flexible piping, the <br />secondary piping (Interstitial space) is pressurized with <br />air up to 50 psig for a minimum of 30 minutes with no <br />loss of pressure allowed. All joints should be wetted <br />with a non -corrosive leak test solution and inspected for <br />bubbles. The use of "soap" solutions is not permitted <br />with stainless steel piping due to the corrosion potential <br />of chlorinated compounds. <br />The installer shall deliver a copy of the test results to the <br />site owner or operator, who shall keep a copy of all final <br />test results. <br />NOTE: When testing the secondary, the primary is also <br />being tested. <br />Page 6 <br />A (;AU I IUN <br />NOTE: When performing a tightness test, the piping <br />M <br />au#EPj <br />;X r! „ `: <br />