FIELD: machine building.
SUBSTANCE: invention relates to valve device, which has bursting element having external boundary; assembly with tabs, including plurality of indestructible tabs spaced apart from each other next to bursting element outer boundary; and mounting structure, functionally supporting bursting element and assembly with tabs next to protected area, wherein tabs are made and oriented with possibility of arrangement above bursting element in its closed state, when bursting element is subjected to normal pressure, wherein tabs are made with possibility of bending into element unlocking position without destruction of tabs, when bursting element is subjected to abnormal pressure of specified value, with bursting element opening and with removal of abnormal pressure action.
EFFECT: technical result consists in creation of improved, indestructible valve units for protection of various structures, exposed to abnormal pressure action.
26 cl, 9 dwg
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