Nexans CRYOFLEX® Junction-free vacuum insulated piping

Key benefits

1. Leaner Design: Cryogenic network simplification by 75% : flexible and continuous design: no joint, no below, no elbow needed.
2. Swift installation: Unroll. Plug. Operate.lines fully prepared in factory delivered at length, terminated, tested and ready to operate and No onsite welding nor X-ray analysis needed! 
3. Boil-off reduced by up to 45%:: High-vacuum insulation, No heat inleak from intermediate junctions, no hot spots
4. Maintenance free 5 years: long lasting high-vacuum <1E-4 mbar at room temperature
5. Safety: No cold spot, no icing, Double containment, Detection of vacuum loss"

Construction

Nexans CRYOFLEX® is a pipe-in-pipe construction made of two helically-corrugated stainless steel tubes, helical corrugation provides flexibility with limited impact on pressure drop. 

High performance thermal insulation is achieved between process and outer tubes from combined action on heat radiation, conduction and convection:

• Multilayer insulation material: multiple layers of highly reflective film separated with spacer fleece is lapped on process tube to reflect heat radiation outside of the construction
• High vacuum is generated in the annular space and stabilized with molecular sieves and chemical getter to prevent heat convection.
• Low loss spacer minimize contact area and subsequent heat conduction between outer and process tubes

An outer PE jacket serves as mechanical protection. (Optional low fire hazard or PE-jacket free configurations).

All Nexans CRYOFLEX® lines integrate a pumping module equiped with burst disks, a pumping port and a vaccum-sensing port.

​Nexans CRYOFLEX® are available from DN20 to DN200. please contact us for product details for configurations larger than DN50 or special constructions