Line maintenance: TT Technologies offers a wide range of plastic pipe splitting heads developed by working directly with gas utilities to create optimum splitting head configurations. The designs are capable of splitting and replacing plastic gas service and main lines from ½-inch to 4 inches in diameter. The hardened heat-treated steel cutting blades are available in various designs and sizes to best match the type of plastic host pipe, as well as soil conditions. For service line splitting, the splitting heads are paired with a winch or other cable-pulling device. For main line splitting, a larger Grundowinch cable pulling system is used.
During the process, small launch and exit pits are dug at either end of the service or main line being replaced. A winch cable is rodded from the exit pit, through the existing line, to the launch pit. The splitting head configuration is attached and then pulled through the exiting line. An expander forces the split pipe into the surrounding soil.