SMARTFLEX pipes and fittings for the transport of fuels have been used for the transport of Diesel fuel in some generator systems in Holland. The generators can be used in particular situations as sources of ordinary power supply, when it is not possible to connect to the public power supply network (e.g. mobile units, construction sites, temporary installations for fairs and shows, etc.), or in emergency conditions, when it is not tolerable to stop the supply of electricity from the main network for the production of auxiliary, reserve or security energy (source elektro.it). SMARTFLEX is the complete multilayer piping system for the transfer of automotive and aviation fuels, biofuels and hazardous fluids. The system has many international and local approvals and is already used and approved by major international petroleum companies, in response to whose needs it has been conceived, developed and successfully launched into the market.