Before revision: Other methods include the folding head line stop which enters the pipe through a reduced branch hot tap , the Sure-Stop line stop which intersects the pipe and doesn't seal inside the pipe like other methods , and the HTP which is a high temperature, high pressure system that will stop the flow on existing pipes at operating temperatures above what other methods of line stops can safely stop.
After revision: Other methods include the folding head line stop which enters the pipe through a reduced branch hot tap ; the Sure-Stop line stop which intersects the pipe and does not seal inside the pipe like other methods ;,,, and the HTP which is a high temperature, high pressure system that will stop the flow on existing pipes at operating temperatures above what other methods of line stops can safely stop.