Weld purging innovators, Huntingdon Fusion Techniques (HFT®), has created a pipe freezing system which enables repair work to be carried out on major pipe networks without having to drain the entire system.
The Accu-FreezeTM Pipe Freezing System utilises liquid nitrogen (N2) to freeze selected liquid in a specific section of the pipe or tube, which then safely forms a controlled, in-line ice plug, blocking the flow of fluid.
The contained ice plug, ideally situated upstream from the repair zone, forms beneath the Accu-Freeze jacket or coil and is capable of withstanding 138 bar in pipes or tubes with diameters of up to 12 inches.
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