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The New GeoFlex piping has been thoroughly tested by Environ and <br /> independent parties to ensure its long term performance. <br /> Type Performance Performance Results <br /> Permeation: The New GeoFlex pipe construction The long term permeation rate (180 Day test) through <br /> incorporates the same Kynar inner barrier layer as the wall of GeoFlex piping is virtually immeasurable. <br /> the previous GeoFlex. This new wall construction <br /> with bonded Kynar layer is virtually impermeable <br /> to all conventional fuels. <br /> Chemical Compatibility: The interior and exterior Before and afterchemical exposure, pressure tests <br /> surfaces of the New GeoFlex piping are not harm- were performed to measure changes in the physical <br /> fully affected by exposure to fuels and other integrity of the piping after 30 days of immersions. <br /> specified chemicals and solutions. The results showed no measurable change. <br /> Bending Integrity: The New GeoFlex piping wall Low temperature bending tests were performed <br /> construction has been designed to maximize flexi- around a specified mandrel at - 18° C for a period <br /> bility without kinking or damage. This flexibility of 24 hrs and then successfully pressure tested to <br /> provides convenient packaging and easy handling. insure physical integrity. Also repetitive bending <br /> tests were performed on the pipe and then pressure <br /> tested successfully. <br /> Strength Tests: The New GeoFlex meets and After immersion in a variety of test liquids the tensile <br /> exceeds the strength performance tests of the strength and the elongation of the test samples were <br /> previous GeoFlex piping and provides more than virtually unchanged. Torque tests were performed on <br /> a five to one safety factor in all strength categories. test samples to assess the effects of torquing from <br /> tightening pipe couplings. <br /> Crush Resistance: The New GeoFlex pipe has been 'Pipe samples were uniformly crushed to 40 percent <br /> tested for its collapse resistance under a vacuum as of the original diameter with no evidence of cracking <br /> well as an external load from ground burial and or breaking. Other pipe samples were subject to 28 <br /> overhead traffic. inches of mercury vacuum and observed to have no <br /> external collapse. <br /> Aging Test: The New GeoFlex has been tested to Air oven aging test were performed on all material <br /> measure its aging characteristics in both under- samples which make up the construction of the New <br /> ground burial applications and aboveground long GeoFlex piping. In addition ultraviolet exposure test <br /> term exposure conditions. have been performed to determine the resistance to <br /> surface stress cracking. <br /> Impulse Testing: The New GeoFlex has been tested Coupled pipe samples were exposed to 150 psi quick <br /> to measure the effects of long term repetitive pres- pressure impulses for more than three million cycles <br /> surization to measure material fracturing and at different temperature levels. After the test was <br /> surface stress cracking. complete the samples were inspected and successfully <br /> hydrostatically tested. <br /> Environ has a high level of confidence in the long term performance of its • <br /> New GeoFlex piping and you will too! <br /> Pubbcatioo-EPP-0243 P.O.Box 330•Smithfield,NC 27577-0330•Tel:(919)359-3400•Customer Service(800)833-1883•Fax:(9191359-3687 <br /> tissue Daae.00-07-01 U.S.Patent 5263794,5271518,5297896,5366318,5346625,5398976,other U.S.and Worldwide Patents Ponding•cc3 Copyright 2001 <br />