INTAKE VALVE UNIT FOR GAS MASKS

摘要

PURPOSE: An intake valve unit for a gas mask is provided to prevent polluted air from flowing into an intake valve unit to replace a canister. CONSTITUTION: An intake valve unit for a gas mask comprises: a valve body(132) in which one end thereof is located within the gas mask and the other end thereof is located outside the mask; a spacer member which is combined with one end of the valve body located within the mask and in which a plurality of interval maintaining pieces are radially formed; an inhaled air film(135) is installed between the valve body and spacer member; a backflow prevention valve(136) in which a hole is punched in the center thereof; and a valve fixing member in which a plurality of through-holes are formed.