Vacuum jacketed pipes


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Semiflex at bulk tank

Vacuum Barrier’s first automated liquid nitrogen piping system employed vacuum jacketed rigid piping. The limitation of rigid pipe and the increasingly sophisticated demands of the industry led to the development of both dynamic and sealed bendable pipe. 

Semiflex curve

SEMIFLEX® systems boast the lowest cool down and steady state heat loss of any liquid nitrogen piping system available. The Triax Liquid/Vapor Separator and Vapor Vent enhancements deliver liquid nitrogen at low pressure and in pure liquid condition.


  • Bendable pipe
  • Continuously pumped or sealed vacuum
  • Fast cool down
  • Easy to assemble
  • Wide range of terminations available
  • Stainless steel
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