Insulated coupling

A coupling comprising a first and second elongated part to be coupled to each other by insertion of the first part into the second part, each part comprises an internal liquefied gas conduit to be fluidly connected at a connection point for transfer of liquefied gas, through the coupling, one of the first part and the second part comprises a warm seal and the second part comprises a purge opening, the coupling further comprising a cold seal arranged to seal a volume between the cold seal and the warm seal from the internal liquefied gas conduits, wherein

• the warm seal is arranged to seal a space between the first and second parts from the atmosphere,
• the coupling further comprising a locking device with a first and second lock position wherein,
• in the first lock position, the first part is partly inserted into the second part such that a space is formed between the first and second parts, and
• the warm seal is engaged such that the purge opening is located between the space and the warm seal enabling purging of a volume between the first and second parts,
• the cold seal is disengaged such that a purge path is open between the first and second parts to the purge opening, and
• in the second lock position the first part is fully inserted into the second part forming a fluid connection at the connection point and the cold seal is engaged creating a closed volume between the cold seal and warm seal.