POSITIVE PRESSURE EXHALATION VALVE FOR RESPIRATORY PROTECTIVE DEVICE

[Object of the Invention] An object of the present invention is to provide a positive pressure exhale valve for a breathing apparatus that opens when internal pressure of a face piece of the breathing apparatus reaches predetermined positive level, comprising a valve body and a spring for always contacting the valve body so as to force the valve body in closing direction, and wherein a vibration body formed by the valve body and the spring is prevented from experiencing self-excited vibration.[Disclosure of the Invention] A positive pressure exhale valve for a breathing apparatus that opens when internal pressure of a face piece of the breathing apparatus reaches predetermined positive level, comprising a valve body, a first spring for always contacting the valve body so as to force the valve body in closing direction, and a braking body for opposing the valve body across a gap and contacting the valve body when a vibration body formed by the valve body and first spring experiences self-excited vibration, thereby suppressing the self-excited vibration.