From the VP of Sales and Marketing,
PHMSA has writen a ruling regulating that a weak link should always be used during any trenchless excavation work. Cumbelrand Products offeres an engineered Weak Link designed to fail before standard polyethylene pipe while pulling during boring operations. It is available in medium or high density at either 20% of the original PE pipe strength or with the conservative ASTM F1804 Standard Practice for Determining Allowable Tensile Load for Polyethylene Gas Pipe During Pull-In Installation. A Mud Plug is also offered to prevent backfilling of debris into the line being pulled if the Weak Link should fail. For more informaiton on Cumberland Product's Weak Link and Mud Plug email email@example.com or visit the following link: http://www.cgs-inc.com/node/113.