Polyethylene Water/Sewer - JM Eagle

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Table 3Pipe SizeSocket Fusion Time CyclesHeating Time(sec)Holding Time(sec)¾" IPS 12 301" IPS 15 401¼" IPS 18 401½" IPS 20 402" IPS 24 403" IPS 28 504" IPS 32 50Figure ACorrectly Made Socket Fusion JointCold Weather Considerations (Below 55°F):• Carefully remove (by light tapping or scraping) the ice and frost fromthe fusion areas and the areas to be clamped. Otherwise, ice will meltwhen exposed to the heating tool and spot chill the polyethylene. Thiscould cause incomplete fusion.• If possible, store fittings at room temperature (such as in truck cab)prior to use. This will reduce fitting contraction and make placing fittingon heater adaptor easier.HDPE WATER/SEWER PIPING SYSTEM TECHNICAL & INSTALLATION GUIDE27
• Cold weather also causes pipe contraction that can result in a loose orslipping cold ring. For best results, clamp one cold ring in its normal positionbehind the depth gauge. Place shim material (i.e., a piece of paperor rag) around the inside diameter of a second cold ring and clampthis cold ring directly behind the first cold ring to prevent slippage.• Shield the heating tool and fusion area from the wind, snow and freezingrain.• Ensure heater adaptor faces maintain a temperature of 500 degrees F(±10 degrees F).• The length of cycle necessary to obtain a complete melt patternwill depend not only on the outdoor temperature, but also on windconditions, pipe contraction and operator technique. The maximumheating cycle times shown in Table 4 should be used as a startingpoint for determining the exact heating cycle time for the particularinstallation conditions.Determining the exact heating cycle time can be accomplished by makinga test melt pattern on a piece of cold scrap pipe. If the initial melt pattern isincomplete, try a 5-second longer cycle on another cold piece of scrap pipe.Continue this process until a complete melt pattern is obtained. Avoid cyclesin excess of that required to achieve a good melt pattern.Once the optimum heating cycle is established, begin fusion by placing thefemale adaptor on the pipe. Start counting the heating cycle once the pipeis completely seated. The socket fitting should then be pushed on the maleadaptor. There should be no problem with melt development in the fittingsince the fit will be snug.Work quickly once pipe and fitting have been removed from the heating toolso that melt heat loss is minimized. But still take time (2-3 seconds) to inspectboth melt patterns.WARNING: Understand and follow all equipment manufacturer’s recommendationsand guidelines.28 HDPE WATER/SEWER PIPING SYSTEM TECHNICAL & INSTALLATION GUIDE
Page 1 and 2: HIGH-DENSITyPOLYETHYLENEWATER/sewer
Page 8 and 9: Publications by the American Societ
Page 10 and 11: or together with internal pressure
Page 12 and 13: 3.2.1 Unloading Site RequirementsTh
Page 14 and 15: 3.4 DraggingOccasionally, when long
Page 16 and 17: 3.9 Pipe Placement in TrenchesJM Ea
Page 18 and 19: 4.0 TESTING4.1 Leak TestingThe inte
Page 20 and 21: Other pressure testing procedures m
Page 22 and 23: • The piping system is so designe
Page 24 and 25: ENGINEER.5.1 Damage AssessmentDamag
Page 26 and 27: 5.2 Heating Tool MaintenanceClean h
Page 30 and 31: 6.2 Butt Fusion: Reference PPI’s
Page 32 and 33: perature-measuring device should be
Page 34 and 35: Visually mitered (angled, off-set)
Page 36 and 37: Heat Soak Force—The force (pounds
Page 38 and 39: surized or non-pressurized main.6.2
Page 40 and 41: Figure DCorrectly Made Socket Fusio
Page 42 and 43: Caution: To assure flow control, ye
Page 44 and 45: Notes:
Page 47: Revised March 2011JME-11B© J-M Man

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