BREATHING APPARATUS,SELF-CONTAINED,GAS RECYCLING for FSG 13
A portable respiratory closed or semi-closed device which provides oxygen and/or gas mixture to the user from self-contained cylinder(s). It eliminates carbon dioxide from exhaled gas and adds to it oxygen and/or gas mixture in order to be breathed by the user. It primarily consists of one or more cylinder,an absorber canister,a breathing bag,and the like. Excludes BREATHING APPARATUS,SELF-CONTAINED and BREATHING APPARATUS,OXYGEN GENERATING.