Ever need to cut into a pipe or repair a pipe with water in the system try freezing it on either side where you want to do the work. We do this on lots of high rises and fire protection systems.
Several methods are:
1. Dry Ice (CO2)- Make an insulated box around pipe where you would like to freeze and add dry ice ( note better result if flow of water is shut down) about 10 minutes pipe is frozen
2. Buy or rent pipe Freezing machine
3. Liquid Nitrogen - Had to do this on large systems filled with gylcol - made a insulated pipe or container larger than pipe feed liquid nitrogen into container around pipe. Make sure you have a outlet port on container as expansion of nitrogen is 1000 times that of the liquid.
Caution with liquid nitrogen as it could freeze your skin if you come in contact with it.
If the pipe is large in diameter you can rap 1/2" soft copper line about 10 to 20 turns around pipe , cover with insulation and run liquid nitrogen through 1/2" pipe to open air. This will freeze any liquid in the pipe including oil.
Several methods are:
1. Dry Ice (CO2)- Make an insulated box around pipe where you would like to freeze and add dry ice ( note better result if flow of water is shut down) about 10 minutes pipe is frozen
2. Buy or rent pipe Freezing machine
3. Liquid Nitrogen - Had to do this on large systems filled with gylcol - made a insulated pipe or container larger than pipe feed liquid nitrogen into container around pipe. Make sure you have a outlet port on container as expansion of nitrogen is 1000 times that of the liquid.
Caution with liquid nitrogen as it could freeze your skin if you come in contact with it.
If the pipe is large in diameter you can rap 1/2" soft copper line about 10 to 20 turns around pipe , cover with insulation and run liquid nitrogen through 1/2" pipe to open air. This will freeze any liquid in the pipe including oil.
