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Thanks to their special technology and high insulation power, CTLs are the safest and most effective means to transfer cryogenic fluids. The lines consist of an inner pipe or hose equipped with multi-layer insulation, and an outer pipe or hose with a vacuum cavity. Vacuum ensures heat convection process insulation whereas radiation is prevented by the multi-layer insulation of the inner pipe, supported by spacers having a very low coefficient of thermal conductivity.The lines are manufactured in sections of variable length, in accordance with set standards or customized project specifications, and are supplied with vacuum, ready for assembly by means of bayonet couplings or joints to be welded. All CTL spools are repeatedly tested during the process and finally tested

for compliance, using a helium leak detector and a mass spectrometer with an acceptability range of at least  mbar l/s.

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