Nitro Pipe Freeze creates a temporary isolation to pipe systems so that repairs and alterations can be carried out, without draining down the building. Our system utilizes Liquid nitrogen to create freeze plugs within the pipe. Go Green. Don't drain it, freeze it! We supply and deliver Liquid Nitrogen and storage vessels to local businesses for various uses. Making Ice-Cream with Liquid Nitrogen? Call (778) 321 2653 more... See more text