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• A split ring of pipe may be used to hold the collar in place while the joint is curing. • Heat collar is not available for 2" flanges. An industrial heat gun may be required to cure the joint. Be sure the end of the gun is at least six inches from the opening of the flange. For Saddles: To heat cure a saddle, place the heating collar over the saddle outlet. During cool weather, a wind shield is recommended to keep heat on the joint. Saddles must be heat cured for two hours. TABLE 8. Adhesive Cure Times for Electric Heating Collars Piping System/ Adhesive Pipe %..'Ure. Time Pipe Fitting Flange Grade Size (Min) (Min) (Min) Red Thread IIA 2"-6" 10 20 15 7000 or 8000 Allow the joint to return to ambient temperature before applying stress to the joint. NOTE: NOV Fiber Glass Systems' eleotrio heating collars are designed to fit around fittings and will overlap on pipe joints and couplings. Exceeding the recommended cure time on pipe joints where the heating collar overlaps may shorten the life of the heating collar and/or damage the pipe. B. Heat Packs - Although heating collars are the preferred method for heat curing joints, heat packs that cure joints in approximately one hour are also available. Retract protective mesh covering on 2" pipe prior of use of heat packs. Refer to Heat Pack Literature (D4500) included with each kit for complete instructions. Observe all safety precautions listed on the installation sheet. The adhesive bead will cure faster than the adhesive in the joint. It is important that the joint not be pressurized until it has been subjected to the proper time -temperature cycle. A temperature versus time to pressure curve is indicated in the instructions paokaged with each adhesive kit. 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 out off a portion of the factory pipe bell If the threads are not fully exposed. Threaded Adapters and Reducer Bushings Before making up threadedconnections, Don inspect the threads. Do not use fittings i` E with damaged threads. Inspect all steel threads and remove 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 pipe. Otherwise, unless a union is used, it may be impossible to tum the adapter into the mating thread. For best results use a strap wrench and a solvent -free, soft -set, non-metallic thread lubricant. The thread lubricant must be chemically resistant (compatible) with the petroleum or alcohol product conveyed in the piping system. Threaded Adapters • Do not use thread sealing tapes. • Apply thread lubricant to all threaded surfaces. • Series 7000 and 8000 adhesives may be used in place of thread lube. • Tighten to 1 to 11f2 turns past hand tight. • Do not use metallic wrenches that may cause damage to fittings. • Do not over tighten. Tighten the adapters as if they were brass or other soft material. Reducer Bushings • When using threaded reducer bushings, the bushing should be BONDED and CURED before the male thread is screwed into the bushing. • Adhesive instead of thread lubricant may be used on reducer bushings. Tighten the threaded reducer bushings as with standard thread lubricant. Flanges • 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 - o to be certain the spigot does not bottom out or extend through the flange. The use of flat SAE washers on all nuts and bolts is required. The maximum allowable torque is indicated on each flange. • Ranges meet ANSI B16.5 Class 150 bolt hole standards. Full -face gasketing materials, 1/8"(3 mm) thick, with a Shore A hardness of 60 to 70 durometer, are recommended for flanges. Gaskets made from Teflon and PVC usually have high durometer ratings and are not acceptable. Connecting to Flat -Fane Flanges - NOV Fiber Glass Systems' flanges must be joined to flat -face flanges. Connecting to Pump/Dispenser - Several methods are available to connect the product piping lines and vent,/vapor recovery lines to the underground storage tank and dispenser: Fiberglass fittings, flexible connector, steel fitting or swing Joint. Use of flexible connectors at each location facilitates ease of installation. 13