Plug it by Freezing it....!
The HFT® Pipestoppers® Qwik-Freezer™ Pipe Freezing Equipment uses liquid carbon dioxide (CO2) to freeze stationary water in any chosen sections of pipe or tubing. By producing very low 'dry ice' temperatures, Qwik- Freezer™ forms a secure in-line ice plug.
This temporarily isolates the water in the system and allows repairs or modification to be made without draining or shutting off systems.
