gas transfer line liquefied with at least one derivation of vapors gas

liquefied gas transfer line between a storage vessel and a use vessel. It includes a transfer tube 10, an outer tube 12 surrounding transfer tube 10 and a screen 14 formed by an element disposed between the transfer tube 10 and outer tube 12. the bypass pipes 16, 18, 20, 22 have one end connected to the transfer tube 10 in thermal contact with said shield 14 to establish a relationship of heat exchange between said screen and the vapors of liquefied gas, and one end connected to a line for recovering the liquefied gas vapors.