Operating instructionsIf a gas network is connected directly to an unpressurised gas depot and no pressure-retaining measures (e.g. pressure-retaining valve) are in place, the prevailing condition is virtually unpressurised. Consumers can only be operated with a downstream compressor.Pressure curveIn regular operation, the gas bubble of the tank is unpressurised. Because the gas bubble unfolds, there is no significant increase in pressure when the tank is filled further. Only when the pressure bubble is full and bulging does the pressure increase.