Both types of pipe have advantages; and many projects require a combination to enable installation and delivery of the cryogen to the end use point. They may be interconnected using close fit bayonets which reduce the heat leak into the system and allow for future reconfiguration if required. Vacuum jacketed pipe may be used with all cryogens in industries such as aerospace, semiconductor, pharmaceutical, food and beverage packaging, biological research and storage, rubber deflashing as well as original equipment manufacturers applications. ASME B31.3 Certification is available from many manufacturers.
Rigid pipe is available in tube and pipe options. Vacuum jacketed tube is applied when low flow and quick cool down are required. Vacuum jacketed pipe (VJP) is used for larger flow applications beginning at ½” IPS up to 10” IPS diameter in some system designs. The advantages of rigid VJP include the lowest heat leak, highest efficiency, longest life cycle and easiest maintenance.
Bendable pipe is manufactured in sizes ¼” through 2” ID. These systems simplify the VJP layout and reduce the need for precise system measurements. The pipe is easier to layout and install than rigid, less costly to buy and lighter, which reduces the packaging and shipping expenses.