A compressed gas such as hydrogen is stored at elevated pressure by introducing it into a plurality of storage cells having a common gas distribution manifold thereby maintaining the same pressure in all cells. The flow of gas between the manifold in any given cell is blocked in the event of a sudden pressure drop in such cell such as may occur in the event of a leak in the cell. Preferably, the cells are constructed in modular form to include a plurality of the cells and the modular material is preferably made of porous gasar material. The low pressure, i.e., leaky cell, is preferably blocked by a closure formed of pliable rubber like material that is forced against the passageway leading from the manifold to the cell by higher gas pressure in the manifold, which occurs when the pressure becomes lower in the given cell due to a leak.
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