What are Vacuum Insulated Pipes?

Vacuum Insulated Pipes (VIP) are prefabricated insulated pipe sections, where these sections are connected via easy
to install and extremely low heat leak bayonet joints. VIPs are used for safe and effective transport of liquid nitrogen for MBE process and cold-testing of integrated chips (ICs) in the semiconductor assembly and test facility.


How it Works

Each section is constructed of an inner pipe surrounded by a concentrically-positioned outer pipe.
The inner pipe is wrapped with multi layer laminar insulation material with chemical getters granules positioned between the layers.
The annular space is completely evacuated to below atmospheric pressure and maintain permanently sealed with very high vacuum.



Flexible VIPs

Cryogas Tech is the leader in the supply of high performance vacuum insulated pipes (VIP), both rigid & flexible types for Cryogenic liquids.
Our VIP are designed, fabricated and inspected to the ASME B31.3 "Process Piping Code" to insure your system will meet or exceed all performance and safety requirements. We provide two basic types of Flexible VIPs:
StatiFlex - StatiFlex pipe is evacuated and sealed at the factory eliminating the need for an on-site vacuum pump. It's bendable nature and modular design facilitate installation and future expansions.
DynaFlex - DynaFlex is an all stainless steel coaxial vacuum insulated pipe that utilizes an external vacuum pump to maintain the system vacuum. Modular by design, DynaFlex spools are joined together with close tolerance bayonet connections. Jumper hoses are used to connect the vacuum annulus of each section of pipe.



Rigid VIPs

Rigid VIPs are all stainless steel coaxial vacuum insulated piping system.
Modular by design, Rigid VIP spools are joined together with close tolerance bayonet connections. Each section is evacuated, sealed and then tested for vacuum integrity.
This advanced piping system minimizes heat gain between the inner carrier pipe and the outer jacket.
Our rigid VIP product minimizes pressure drop and improves flow characteristics. By incorporating strategically located flexible sections when required, Rigid VIPs are easy to install for both indoor and outdoor installations.
Cryogas offer a complete line of components including in-line venting devices, phase separators and gas traps to maximize the system performance.



Our VIP Products

Our list of vacuum insulated products include (please click on the link to view details):
Phase separator
Degasser and Gas vent
Flexible hoses - Static (StatiFlex)
Flexible hoses - Dynamic (DynaFlex)
Rigid Vacuum Insulated Pipe
Vacuum Insulated Valve
Bayonet Connector
Click here to view technical specs / product datasheets