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COB Industries Accu-Freeze™

Liquid Nitrogen Pipe Freezing System for Pipe Repair

The patented Accu-Freeze™ system is the most advanced pipe freezing system in the world. It utilizes liquid nitrogen in a controlled and automated system to safely and reliably freeze static liquids in a selected section of pipe or tubing. The standard Accu-Freeze™ AF1000 Kit is used to create an in-line ice plug capable of withstanding 2000 PSI in pipes up to 12 inches in diameter. Ice plugs (or “freeze seals”) temporarily isolate sections of pipe for as long as necessary, allowing repairs or modifications to be made without shutting off or draining down the entire system.

Accu-Freeze Pipe Freezing equipment is an essential tool in the maintenance of all types of liquid storage, processing and transfer stations. Accu-Freeze can create ice plugs also called freeze seals in a wide range of applications that can provide cost effective solutions, from a small domestic water pipe to a huge oil pipeline, from a Navy ships electronics cooling system to hydrolic lines on the space shuttle, the freeze can be applied quickly and the ice plugs can maintained over a long period of time, day and even weeks as nessary.

If you need to isolate a leaking valve, the most practical solution in terms of time and cost is pipe freezing.

By appling freezing jackets to the pipe upstream and downstream from the leaky valve, ice plugs can be formed in pipe sizes up to 48 inches and can be frozen using Accu-Freezes standard range of equipment. For larger or unusual applications special custom equipment can be produced economically.

The majority of liquids can be frozen quickly using the Accu-Freeze system to form ice plugs which provides a positive seal against fluid flow.

Ice Plugs can be controlled by the Accu-Freeze™ Patented Control System and maintain the condition of the ice plugs for hours, days or even weeks, while your personnel carry out the necessary rectification work.

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