INDIVIDUAL RESPIRATORY PROTECTION MEANS EXHALATION VALVE Russian patent published in 2019 - IPC A62B18/10 

FIELD: personal protection equipment.

SUBSTANCE: invention relates to devices for individual respiratory protection. Device includes two valves of different diameters, made from elastic material, large and small. Large valve and small-diameter valve are connected to each other by means of putting small-diameter valve on valve leg of large diameter until contact of cylindrical supports and form a single assembly unit, which is installed on the exhalation unit saddle, having a stepped hole with support sites of different diameters, wherein outer opening diameter is larger than inner diameter. Large valve seats on outer support platform of larger diameter, smaller valve – on inner support platform of smaller diameter.

EFFECT: invention is aimed at improvement of operational and ergonomic characteristics.

1 cl, 4 dwg