Discloses a respiratory device comprising a mask positioned around the mouth and nose of a wearer to form a relative closed area sealed from the ambient air, at least one unidirectional valve for mounting of an active venting system, installed onto the mask for exhausting warm, moist exhaled air from the interior space of the respirators and at least one active venting system attached onto the valve and operated during the exhalation cycle. The top housing of the unidirectional valve has an attachment member for attaching the active venting system onto it. The active venting system can be attachable or detachable onto the valve. The valve attached with active venting system together effectively and quickly exchanges the air from the interior of the mask during exhalation cycle. When the AVS is not attached onto the valve, a simple valve cap can be attached on instead, for aesthetic purposes.揭露一種呼吸罩(respiratory)裝置，包括：面罩，定位在穿戴者的口及鼻的周圍，以形成與周遭空氣隔離(seal)之相對封閉範圍；至少一單方向(unidirectional)閥，用於裝設主動排放系統，安裝在面罩上以從呼吸罩的內部空間排出溫暖、潮溼的呼出空氣；以及至少一主動排放系統，貼附在該閥上，並在呼氣周期期間運作。單方向閥的頂部殼體具有一貼附元件以貼附主動排放系統於其上。主動排放系統可貼附在閥上或從閥上拆下。貼附了主動排放系統的閥共同有效且快速地在呼氣周期期間從面罩的內部更換空氣。當AVS並未貼附在閥上時，可改以簡易的閥帽貼附上去，以求美觀。
