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SECTION 6 ♦ Installation 1.6.6 Connecting to Other Systems Adapters available for connecting to other systems include the following: threaded adapters (bell or spigot by NPT or BSP threads), reducer bushings (NPT), and flanges, Note: When using adapters with spigot ends, it may be necessary to cut off a portion of the factory pipe bell if the threads are not fully exposed. 1. Threaded adapters (NPT or BSP) and re- ducer bushings (NPT) (see Fig. 1.6.23) Before making up threaded connections, in- spect the threads. Do not use fittings with damaged threads. Inspect all steel threads and re- move any burrs. Threads must be clean and dry before applying thread lubricant. When using threaded adapters, thread them into the other system before bonding onto Smith Fiberglass Products pipe. Otherwise, unless a union is used, it may be impossible to turn the adapter into the mating thread. You will obtain best results using a strap wrench and a solvent -free, soft -set, non-metallic thread lubricant. The thread lubricant must be chemi- caIly resistant (compatible) with the petroleum or alco- hol product conveyed in the piping system. Do not use thread sealing tapes. For best results, apply thread lubricant to both the male and female threads. Tighten threads 1 to 134 turns past hand tight to ensure a proper seal. CAUTION: Do not over tighten. Tighten the adapters as if they were brass or other soft material. NOTE: When using threaded reducer bushings, the bushing should be BONDED AND CURED before the male thread is screwed into the bushing. You can use DS -8000 series adhesives instead of thread lubricant on threaded adapters. Be certain to tighten (1) Teflon is a registered trademark of E. I, DuPont de Nemours Co. 16 the threaded adapters as with standard thread lubri- cant. 2. Flanges (see Fig. 1,6.24) Before bonding the flange onto the pipe, make sure the bolt holes line up with the mating bolt holes on the other system. Do not bolt the flange before bonding unless insertion depth of the spigot is previously checked to be certain that the spigot does not bottom out or extend through the flange. The use of flat washers on all nuts and bolts is required. The maximum al- lowable torque is indicated on each flange. FIGURE 1.6.24 Smith Fiberglass Products flanges meet ANSI B16.5 Class 150 bolt hole standards. Full -face gasketing ma- terials, A" (3 mm) thick, with a Shore A hardness of 60 to 70 durometer, are recommended for Smith Fiberglass Products flanges. Gaskets made from Teflon(1) and PVC usually have high durometer ratings and are not acceptable. Connecting to flat -face flanges—Smith Fiberglass Products flanges must be joined to flat -face flanges. The recommended maximum torque is listed on the flange label. 1.6.7 Flexible Hose Connections Flexible hose connectors are preferred when connecting the product piping lines and vapor recovery lines to the underground storage tank and dispenser (see Fig. 1.6.25). Use of flexible connectors at each location facilitates ease R TI Typical Pump Installation Flexible Connection FIGURE 1.6.25 Installation Instructions • • •