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1' e <br /> An air valve stem is installed in the boot for an outlet opening for connecting the <br /> crossover and/or test tubes. These tubes are used.for the testing of and the <br /> interconnection/communication of the interstitial space from pipe section to pipe section. <br /> Crossover tube assemblies are used for junctions within dispensers sumps, pipe to pipe in <br /> line connections, piping run termination points, tank sump connection points and any <br /> piping manifold connection points. <br /> Test/Crossover Boots and tubes are fitted and hand tightened in place after the piping <br /> termination's and their connections have been made. After installation and tightening of <br /> all test/crossover boots and tubes, pressure testing may be done. Do not over tighten. <br /> Crossover tubes may be removed to isolate each piping run if required. <br /> PRESSURE TESTING PREWARY AND SECONDARY <br /> Suggested typical primary piping testing is done at 50 psi for a minimum of one(1) hour. <br /> Suggested typical secondary jacket or interstitial space testing is done at 5 psi for Co-Flex <br /> or 50 psi for Co-Flex 2000 for a minimum of one(1) hour. These tests may be performed <br /> after installation is complete, but before backfill. Local regulations and requirements may <br /> vary. <br /> Note; Care needs to be taken when pressurizing the secondary, add pressure slowly and <br /> do not exceed 5 psi for Co-Flex or 75 psi for Co-Flex 2000 during pressurization process. <br /> For Co-Flex, 0-5 psi range, we recommend a small hand, bicycle type, pump to pressurize <br /> the secondary. Always use safe procedures when pressure testing piping systems. <br /> Western Fiberglass, Inc. assumes no liability or responsibility for testing procedures. <br /> ENITIAL PIPE SYSTEM FILLING: <br /> Upon completion of connection and testing of your Co-Flex system, initially filling of the <br /> system may begin. Be careful to provide a venting point or place which will allow any air <br /> within the piping to escape during this initial filling. Do not operate any pumping devices <br /> until all air has been purged from piping system. Small bubbles trapped within the system <br /> will be purged under normal operating conditions. <br />