Polyethylene Water/Sewer - JM Eagle

Caution: To assure flow control, yet prevent damage to the pipe,tools have mechanical stops to limit the minimum gap between thesqueeze bars. Recommended minimum gaps between the squeeze barsfor JM Eagle Municipal & Industrial Water or Sewer Pipe are based onthe formula:min.gap = (2)(max wall thickness)(0.7)In addition to observing the minimum gap distances between bars, the barsthemselves should be rounded to prevent pipe damage.The user also may want to consult the “Standard Guide for Squeeze-Offof Polyolefin Gas Pressure Pipe and Tubing,” Designation F1041, issued bythe ASTM.7.2 Precautions for Squeeze-Off• Certain precautions should be taken to prevent damage to the squeezetools or to JM Eagle Municipal & Industrial Water or Sewer Pipe duringsqueeze-off in recognition of the large forces required for flow control, particularlyin large main sizes. Damage to the pipe from improper squeezeoffprocedures may cause eventual failure.• Make certain the pipe is centered and squared in the squeeze tool. It isimportant that the pipe be free to spread as it flattens. Failure to do so mayprevent flow control or result in damage to the pipe or the tool.• Locate the squeeze point at least three pipe diameters away from the nearestfitting or butt-fused joint. Failure to do so may result in damage to thefittings or joints.• Squeeze-off JM Eagle Municipal & Industrial Water or Sewer Pipe onlyonce in the same place. It is possible for scale or other metal particlescontained within the flow to become trapped at the squeeze point. A secondsqueeze in the immediate area of the first could force these particlesto penetrate into or through the pipe wall.• Always use a squeeze tool with gap stops to limit the amount of squeezeand use the proper gap stops for the pipe size being squeezed. Usingsmaller gap stops or otherwise over-squeezing the pipe may result in dam-HDPE WATER/SEWER PIPING SYSTEM TECHNICAL & INSTALLATION GUIDE41