How often does the gas system in a caravan or motorcaravan need to be inspected?
In Germany the gas system needs to be checked regularly every 2 years by a liquid gas expert (DVFG, TÜV, DEKRA). This is documented in a testing certificate (G607) and a test plate is attached to the outside of the vehicle.
Both the gas pressure controller and the gas hoses need to be replaced at the latest 10 years after the production date.