as plug 35 is removed from orifice 15 or 24 of valve stem 14 or 22 the pressure relief hole should preferably allow venting to occur while shaft 33 is still sufficiently engaged by for example threaded engagement with valve stem 14 or 22 so that any gas pressure built up does not blow the plug out of the orifice before venting can occur seal 32 is preferably adjacent the handle 30 seal 32 is preferably a compressible material which helps to prevent leakage of gas through valve stem 14 or 22 the compressible material can be for example rubber cork synthetic composites soft metals such as lead and the like as would known to one of ordinary skill in the art seal 32 can be affixed to the underside of handle 30 by for example adhesives or by frictional forces or can be relatively loose and be held in place by its interposition between handle 30 and valve outer face 17 or 19 seal 32 can be continuous as for example a rubber o ring or discontinuous as in a string of material which can be wrapped about the pressurized gas tank valve plug 35 at for example the juncture of handle 30 and shaft 33 seal 32 need not be in contact with handle 30 although in a preferred embodiment seal 32 is interposed between an underside of handle 30 and an outer face 17 of for example a pol valve stem 14 or an outer face 19 of for example a type 1 connection valve stem 22 the placement of seal 32 in this location allows for the sealing of for example both a.