Meet requirements for a typ1 pressure relief device valve for aviator's breathing oxygen. This is to meet the requirements of mil-prf-27210g.Am 1.
Filled with 2 cubic feet of abo per mil-prf-27210g, cylinder and valve-hose assembly are gfm. Cylinder nsn 8120-00-537-0574. Valve-hose assembly nsn 1660-00-537-0578. Overall diameter 1.891