Depending on customer requirements, traditional insulation layers can be applied to the piping, when using double wall piping down to -50°C. For temperatures lower than this then MLI type insulation is recommended, and for even better thermal performance a vacuum system can be employed. Vacuum sytems require a certain degree of maintenance in order to maintain the vacuum, during commissioning due to cool down periods, and once the vaccum is achieved due to outgassing. AF Pipes can offer advice and systems to suit customer requirements, together with piping modules or arrangements.