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Guidelines for Service <br />Station Layout <br />using Dualoy 3000/1- fiberglass <br />piping systems <br />Introduction Adhere to the methods illustrated in the following photographs when installing Dualoy <br />3000/1- buried fuel handling piping systems. <br />Petroleum piping <br />• Maintain a minimum 6'/z" distance between <br />parallel lines and between the trench side <br />wall and the piping. • Piping runs must be <br />straight. • Use Phil-Tite styrofoam pipe <br />spacers to support the pipe. • Maintain a <br />minimum 2'h" vertical clearance between <br />lines at crossovers. • Keep the trench <br />bottom clean and free from debris. <br />• Remove the surface gloss by light sanding <br />to a uniform length at the ends of each piece <br />of containment pipe before installing the <br />containment fittings. • Uniform gloss <br />removal makes it easier to determine that the <br />containment pipe is inserted to a constant <br />1 Z inch depth in the containment fittings. <br />UUnderwriters <br />LLaboratories Inc.® <br />FP626 (7/95) <br />