Accu-Freeze uses liquid nitrogen to freeze the contents of the pipe at an isolated point in order so repairs can be made on a section of pipe. This system allows a repair on a pipe or a connection line without draining the whole fluid system.
Accu-Freeze can be used on iron, lead, steel and copper pipes. It is also applicable on plastic pipes (with special instructions).

Common Questions about the Accu-Freeze System

What size pipes is Accu-Freeze™ suitable for?
The Accu-Freeze® insulating jacket accommodates pipe sizes from 6-12" (150-305 mm). Copper coil is used for the smaller sizes. Aluminium clam shells are available for 2"-16" (50 mm-400 mm).

Can I freeze liquids other than water?
Yes, milk and beer are all examples of other liquids that can be frozen. Some liquids containing refrigerants can be frozen too, just check with our Technical Team on the type and % content.

Can I do a freeze either side of the repair joint?
Yes, this is called a double freeze and necessary accessories can be purchased along with the Accu-Freeze™ kit. A double freeze is required when a valve needs replacing for example.

What kind of pipes can Accu-Freeze™ be used on?
Accu-Freeze™ can be used on iron, lead, steel and copper pipes. It is also applicable to plastic pipes, but these will take up to three times longer.

What about bursting or fracturing pipes?
Pipe fractures are not caused by the ice plug or the freezing process. They are caused by a failure to allow enough space between the ice plug and closed connections. This is due to the increase in pressure that is caused by water that is displaced by the ice plug as it grows that can create a "hydraulic ram" if enough space is not allowed.