Abstract: A pressure vessel for the storage of hydrogen in form of metal hydride is constructed to have an inner tube being relatively thin and made of material copper or aluminum having high thermal conductivity, but the strength of the inner vessel tube is insufficient by and in itself to take up operating pressure in the interior when hydrogen is either fed into the interior of the tube or developed therein; an outer cylindrical tubular vessel jacket is made of stainless steel and abuts against radially outwardly extending ribs of the inner vessel establishing flow channels the rib means are dimensioned not to undergo plastic deformation during operation at the gas storage facility; axial end cap means closes the vessels on both ends; sealed gas nipples means in one or both caps feeds gas into and/or out of the interior of the inner vessel tube.