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4.0 Piping Applications FlexWorks flexible piping may be used in the following applica- tions. Pressure System Supply Piping Suction System Supply Piping Tank Vent Piping Stage II Vapor Recovery Piping Remote Fill Lines WARNING: FlexWorks piping is not warranted for above ground transmission of flammable liquids due to the possible exposure to fire. 5.0 Operating Pressures & Vacuums FlexWorks piping and its associated fitting systems have a minimum five to one (5:1) safety factor from maximum rated operating pres- sure for the primary pipe. The product fluids transferred should not exceed the maximum operating pressures indicated on each pipe size. For suction systems the pipe is capable of withstanding 29" mercury vacuum. 6.0 Operating Temperatures FlexWorks pipe is for underground use only and a maximum operat- ing temperature of 125°F (521C). 7.0 Allowable Bend Radius FlexWorks piping is a semi -flexible pipe and should never be bent at a radius of less than the designed bend radius. If a section of pipe becomes kinked, the kinked section should be cut-out of a piping length and it should be discarded and never used. NOTICE: For cold weather conditions (below freezing) refer to the Flexible Piping Manual for important installation tips. Pipe Diameter Min Bend Radius 3/4", 1" 18" 1-1/2" 24" 2" 36" 3" 72" 8.0 Storage, Transit & Handling OPW-FCS requires that all piping, fittings and system components be stored in such a manner that they will not be subject to direct sunlight and /or excessive environmental conditions. OPW-FCS requires that the piping, fittings and system components are han- dled in such a manner that it will not cause any unnecessary dam- age. Do not drop, cut or cause severe impact to any of the compo- nents. Keep all piping, fittings and other components in the original packaging until ready for use. Keep all coupling protector caps/ covers on couplings and fittings until assembly. Inspect all fittings prior to installing. Parts that have been cut, cracked or otherwise misused should be replaced. Do not drive over, drag or damage FlexWorks Piping. Any damaged or compromised section of pipe should be discarded and not be used. NOTICE: Never use knives or razor blades to open packaging as damage to piping could occur. 9.0 Assembly of FlexWorks Piping System FlexWorks piping must be installed with OPW-FCS tools and fit- tings. These include an OPW-FCS coupling machine fitted with the appropriate size swage kit, bull nose plugs, a pipe cutter tool and jacket cutter/swivel wrenches for the appropriate size pipe. Failure to use OPW-FCS tools and fittings may cause damage or failure of the system and void product warranty. 9.1 Pipe Burial Requirements FlexWorks piping, and Access piping are strong, yet flexible, piping systems and must be buried in such a manner so that they will not compress. Be sure that proper pipe trenching, backfill materials and burial depth requirements are followed and in place prior to measur- ing and cutting FlexWorks piping and Access piping. Refer to the Flexible Piping Manual for complete instructions and warranty com- pliance. Note: FlexWorks piping is intended for installation in normal soil applications. CAUTION: Use extra caution when backfilling piping in trench- es or open excavations so as not to damage or crush the pip- ing or any associated fittings. Avoid sudden impacts from dumping backfill materials. Spread backfill gradually and even- ly. Failure to do so could cause immediate or long-term dam- age to the piping. CAUTION: FlexWorks and Access piping can be punctured by grade stakes or other sharp objects driven into the ground. The use of tracer tape or a schematic of the underground pip- ing should always be kept onsite and marked off prior to com- mencing any work that may damage the pipe. NOTICE: Installation instructions for containment sumps are not contained within this FlexWorks Piping instructions. Refer to the dedicated product manuals for the correct installation procedures and techniques for the containment sumps and ZOf6 flexible entry boots. MAR 9.2 Installing Pipe Adapters All FlexWorks fittings have proprietary threads and cannot be dig...: rectly connected to standard National Pipe Thread (NPT) pipe • ! fittings without an OPW-FCS adapter. After all plumbing assemblies have been fabricated and installed inside the tank and dispenser sumps, install the appropriate OPW-FCS pipe adapter (Swivel Adapter or Fitting) into NPT threaded pipefitting. This is done with standard pipefitting tools, but caution should be taken not to dam- age the OPW-FCS threads or 0 -ring surfaces. NOTICE: For NPT threads, use only UL classified thread seal- ant specifically formulated for gasoline and petroleum prod- ucts. Do not over -tighten fittings for it could cause damage to the tapered threads. CAUTION: Cutting the steel riser pipes and plumbing assem- blies too long or too short could cause significant stress on the FlexWorks pipe and coupling that could ultimately cause failure. The FlexWorks fittings should always be in direct align- ment with the flexible entry boot openings and cannot be used in lieu of a flex connector. NOTE: It is important to select the correct size and type pipe entry boot to be used for a specific application and pipe size. Refer to the OPW-FCS Flexible Entry Boot Manual of detailed information for installing these entry seals. 9.3 Installing Access Piping Access Piping is a large diameter corrugated flexible piping that adds additional protection to FlexWorks piping and allows the pipe to be removed and replaced without the need for excavation. Meas- uring and cutting Access Pipe should be done prior to measuring