By pipe freezing, you'll save time and money by eliminating the draining process and related problems.
DiHydro isolates the problem area making your project less costly and hassle free.

Nitrogen Pipe Freezing...
Used to perform maintenance and repairs without building shut downs and/or loss of large volumes of water or treatment chemicals
Allows restoration of circulation on system adjacent to freeze
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Below is video showing the process of DiHydro's Nitrogen Pipe Freeze